青青青爽在线视频免费观看-在线国产日韩欧美播放精华一-日韩综合第二区2区3一区-亚洲av永久无码精品欣赏-成人精品午夜在线观看-婷婷五月深深久久精品-久青草国产高清在线视频-国产成人免费片在线观看 亚洲欧美动漫中文字幕-国产视频精品久久久久不卡-久久?v不卡人妻一区二区-中文字AV字幕在线观看-久久99中文字幕久久-亚洲欧美综合图片-国产精品视频福利-国产亚洲欧美人伦

2023

2023

  • Record 289 of

    Title:Construction of the optical-mechanical installation and calibration process technology on the basis of the digital twin
    Author(s):Chou, Xiao-Quan(1); Li, Xiao-Yan(1); Kang, Shi-Fa(1); Yang, Fan(1)
    Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 12507  Issue: null  Article Number: 125070Z  DOI: 10.1117/12.2655281  Published: 2023  
    Abstract:With the continuous development of the technology and informatization, the current research and application of the technology of the digital twin has become a hot spot. The technology of the digital twin is applied to the optical-mechanical system design, the optical-mechanical manufacturing, the optical-mechanical installation and calibration, as well as the inspection over the whole process and the whole life cycle. The objective of this paper is to study the construction of the digital twin in the crucial links of the installation and calibration process over the whole process of the optical-mechanical system, as well as the modeling and simulation of the digital twin in the optical-mechanical installation and calibration process, including the ideal model simulation, the optical-mechanical part-level simulation, the optical-mechanical thermal coupling simulation, the total integration simulation, as well as the prediction of the use effect of the optical-mechanical system. In the past, the ex post data were collected in order to feed back for the model design and the process, so as to improve the accuracy of the simulation. Accordingly, the actual measured data of the optical-mechanical part entity are substituted into the model. Moreover, the results of the simulation integration are used to correct the technical scheme of the process. Furthermore, the physical entity data generated during the execution of the correction scheme are transmitted to the simulation model once again, so as to achieve the dynamic data interactive application of the optical-mechanical system in the physical entity and the virtual model. Thus, the dynamic system is formed. In the end, the data exchange, sharing as well as the mutual mapping between the physical entity and the virtual entity during the installation and calibration of the optical-mechanical system can be realized. In conclusion, the provision of the real-time data, the analysis and optimization of the installation and calibration process, as well as the decision making of the implementation plan in the aspect of the installation and calibration application of the optical-mechanical system, which provide an effective way for the process design of the installation and calibration of the optical-mechanical system as well as the digital improvement of the installation and calibration technology. ? 2023 SPIE.
    Accession Number: 20230613537945
  • Record 290 of

    Title:Epicycle-model-guided arbitrary shaped customization of structured light
    Author(s):Fan, H.H.(1); Tai, Y.P.(1,2); Li, H.H.(1); Li, X.Z.(1,2,3); Zhan, Q.W.(4)
    Source: Applied Physics Letters  Volume: 122  Issue: 23  Article Number: 231104  DOI: 10.1063/5.0147002  Published: June 5, 2023  
    Abstract:Structured light has been exploited as an important tool for particle manipulation along a desired complex path. However, generating the required structured light illumination for the creation of an arbitrary shape without an analytic expression as a guide is challenging, specifically for designing a structured beam by mapping the shape of an arbitrary object. To address this issue, we propose an effective scheme to customize structured light freely and precisely by modifying the epicycle model in astrophysics. Predesigned structured beams can be identified with or without explicit analytic expressions of the desired shapes. Moreover, we study the roles and relationships between the number of epicycles and the number of key points. The local stretching and transformation of a specific structured beam are also analyzed. The advantages of the proposed method are demonstrated by conducting dynamic manipulation experiments using polystyrene particles. This method is simple and intuitive and provides an effective toolkit for the design of structured light for more complex tasks, thus facilitating advanced applications in optical manipulations. ? 2023 Author(s).
    Accession Number: 20232514253242
  • Record 291 of

    Title:Effect of residual chlorine on fluorescence emission of Dy3+ doped chalcogenide glasses with low gallium content
    Author(s):Cui, Jian(1,2); Xu, Yantao(1); Xiao, Xusheng(1); Cui, Xiaoxia(1); Liu, Chengzhen(1); Guo, Haitao(1,2,3)
    Source: Journal of the American Ceramic Society  Volume: 106  Issue: 2  Article Number: null  DOI: 10.1111/jace.18783  Published: February 2023  
    Abstract:Chlorine or chlorides are usually used as a dehydrating agent for removing the O-H or S(Se)-H in the preparation of high-purity chalcogenide glasses. However, the residual chlorine in some rare-earth ions doped chalcogenide glasses was found to have a great negative impact on fluorescence emission. In this work, the effect of residual chlorine on the fluorescence emission of Dy3+ ions in serial (Ge)GaAsSbS glasses was studied quantitatively, and the reasons were discussed. Cl2 gas and SbCl3 were used as the source of chlorine and their residual contents were controlled by the post-distillation process and added content, respectively. The results can give some suggestions for how to eliminate the negative effects of chlorine and improve the glass’ optical gain properties. ? 2022 The American Ceramic Society.
    Accession Number: 20224112861394
  • Record 292 of

    Title:GLMF-Net: A Granular-level and Layer-level Multi-scale Fusion Network for Change Detection
    Author(s):Li, Wenyao(1); He, Renjie(1); Dai, Yuchao(1); Zhang, Pengchang(2); He, Mingyi(1)
    Source: Proceedings of the 18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023  Volume: null  Issue: null  Article Number: null  DOI: 10.1109/ICIEA58696.2023.10241769  Published: 2023  
    Abstract:Change detection (CD) is a crucial task in remote sensing (RS) image analysis. In recent years, the development of deep learning has led to significant progress in this field. However, current deep learning-based methods struggle to achieve accurate change detection in complex scenes, often resulting in false detections and loss of details of change objects. In this paper, we propose a novel granular-level and layer-level multi-scale fusion network (GLMF-Net) to overcome these problems. The GLMF-Net consists of two key modules: the granular-level multi-scale fusion (GMF) module and the layer-level multi-scale fusion (LMF) module. The GMF module locates potential change objects by capturing granular-level change features, while the LMF module excavates the details of change objects in shallow features. To achieve inter-layer feature fusion, we also develop a group-wise guidance operation in the LMF module. Extensive experimental results demonstrate that our GLMF-Net significantly improves the accuracy of change detection in complex scenes, and achieves the state-of-the-art performance on the widely used CDD and LEVIR-CD datasets in terms of five standard metrics. ? 2023 IEEE.
    Accession Number: 20234114875712
  • Record 293 of

    Title:Design of compact dual-core terahertz polarization beam splitter with broad bandwidth
    Author(s):Zheng, Yunqiang(1); Liu, Jinqiu(2); Wang, Yufei(1); Liu, Huan(1); Wang, Wei(1); Xie, Xiaoping(1)
    Source: Microwave and Optical Technology Letters  Volume: 65  Issue: 5  Article Number: null  DOI: 10.1002/mop.33384  Published: May 2023  
    Abstract:A novel dual-core structure based on cyclic olefin copolymer (COC) photonic crystal fiber (PCF) is proposed for realizing Terahertz (THz) polarization beam splitting. The dependence of coupling length and structural parameters of the THz polarization beam splitter (TPBS) is analyzed. The confinement loss, effective material loss, and extinction ratio (ER) are examined. The numerical simulation results show, two orthogonal polarization modes are separated completely within a device length of only 45.16 mm owing to the different coupling length in x- and y-polarization directions. The maximum polarization ER of 107.7 dB is obtained at 0.54 THz. The bandwidth with ER greater than 20 dB reaches 0.02 THz. The proposed compact dual-core TPBS will find extensive applications in THz photonic systems. ? 2022 Wiley Periodicals LLC.
    Accession Number: 20222712304950
  • Record 294 of

    Title:The Key Research of High Speed Camera Based on Multiple Core CMOS Sensors
    Author(s):Li, Yanzhang(1); Zeng, Hong(1); Liu, Guangsen(2); Zhu, Jun(1); Che, Xiaoling(1)
    Source: Lecture Notes in Electrical Engineering  Volume: 996 LNEE  Issue: null  Article Number: null  DOI: 10.1007/978-981-19-9968-0_29  Published: 2023  
    Abstract:High speed camera is different from traditional remote sensing camera. Object details can be captured through high frame rate imaging. Due to the limited exposure time, the amount of data transmitted and other factors, a single camera cannot achieve the ultra-high frame rate imaging function, and multiple cameras are required to work together. The camera is mainly used for high-speed shooting of moving targets. High frame rate cameras are mainly foreigner design, and domestic cameras are still in their infancy. Especially in the design of a single camera to achieve high frame rate, it is limited by the performance of the CMOS sensor. This paper uses the design of interpolating multiple CMOS sensors into a high frame rate camera, which is not limited by the frame rate of a single CMOS sensor. It only needs the accurate interval exposure of each CMOS sensor, which needs to deal with the exposure synchronization of many CMOS sensors, otherwise the inter-polated high frame rate will be meaningless. ? 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
    Accession Number: 20231113734082
  • Record 295 of

    Title:Analytical method for calculating internal stray radiation from an IR spectrometer based on the view factor
    Author(s):Zhang, Zhi-Nan(1,2); Li, Li-Bo(1); Hu, Bing-Liang(1); Wang, Peng-Chong(1); Yang, Ying(1); Ke, Shan-Liang(1); Wang, Shuang(1); Li, Si-Yuan(1)
    Source: Applied Optics  Volume: 62  Issue: 3  Article Number: null  DOI: 10.1364/AO.478330  Published: January 20, 2023  
    Abstract:Optomechanical components such as the lens barrels and frames of IR spectrometers produce strong internal stray radiation, which reduces the instrument’s SNR and dynamic range. An IR internal stray radiation calculation method based on an analytical model of the view factor is proposed. The mathematical model of the view factor calculation method of typical optomechanical components is established. For any IR optical systems, the internal stray radiation can be quickly and accurately calculated by adjusting the coordinate systems in the calculation method. Based on the proposed method, the internal stray radiation of a double-pass long-wave IR spectrometer was calculated. The calculation results are consistent with the simulation results. The RMS value of the relative error between the calculated value and the simulated value is around 11%. To verify the proposed method, an experiment was conducted to test the internal stray radiation of the long-wave IR spectrometer. The internal stray radiation test results agree with the calculated and simulated results, and the relative error between the test results and the calculation results is within 9%. ? 2023 Optica Publishing Group.
    Accession Number: 20230713580393
  • Record 296 of

    Title:Small sample learning of calligraphy and painting identification based on hyperspectral image
    Author(s):Tang, Xingjia(1,2); Zhang, Pengchang(1); Xu, Zongben(2); Hu, Bingliang(1); Li, Siyuan(1)
    Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 12617  Issue: null  Article Number: 126170Y  DOI: 10.1117/12.2663778  Published: 2023  
    Abstract:The existence of forgeries has seriously affected the fair trading, protection and inheritance of calligraphy and painting, while, it been unable to identify high-level counterfeiting means by traditional expert eye identification method. Combining the advantages of material attribute recognition and imaging analysis of hyperspectral imaging technology with the powerful feature expression and classification ability of convolutional neural network, the identification level of calligraphy and painting could be improved. However, there are still some practical problems in the application, like the small sample learning problem caused by the difficulty in obtaining the real hyperspectral sample data of calligraphy and painting. In this paper, a 10-hidden layers 2D-CNN convolutional neural network transfer learning method for calligraphy and painting identification with data enhancement is proposed by using a large number of relevant picture data and a small amount of MNF dimensionality reduced hyperspectral data. The experimental test shows that on the test set of this paper, for the identification of calligraphy and painting authors and authenticity, the accuracy of migration learning with data enhancement under the original sample are separately 97.5% and 94.8%, the accuracy of migration learning with data enhancement under half of the original sample are separately 94.3% and 92.8%, which shows the migration learning and data enhancement is helpful, and the identification accuracy of half of the original sample basically reaches the identification accuracy of the original sample without data enhancement and transfer learning, whose accuracy are 92.1% and 92.5%. ? 2023 SPIE.
    Accession Number: 20232114130605
  • Record 297 of

    Title:Two Step Phase-shifting Interferometry by Least Squares Iterative Optimization
    Author(s):Liu, Chang(1); Du, Hubing(1); Feng, Leijie(1); Yan, Xingxu(1); Zhang, Gaopeng(2)
    Source: Guangzi Xuebao/Acta Photonica Sinica  Volume: 52  Issue: 2  Article Number: 0212003  DOI: 10.3788/gzxb20235202.0212003  Published: February 2023  
    Abstract:The temporal phase shifting technique is a powerful tool that is used in numerous industrial,research and development applications, such as range acquisition, industrial inspection, reverse engineering,and object recognition. However,the accuracy of temporal phase shifting technique is limited by the phase-shifting uncertainties resulting from the imperfect conditions in the real testing environments,such as the miscalibration. So,there is a strict requirement on the precision of the phase shifter. To remove this requirement,there have been reported works about phase reconstruction with only two frames. Two-shot phase reconstruction,i.e.,the recovery of a complex-valued signal from two intensity patterns that are nearly identical apart from a random and unknown phase shift between them,which can reconstruct the phase without local sign ambiguity using the minimum number of interferograms with higher measurement accuracy than the single-frame algorithm,is especially prevalent in imperfect testing conditions where requires reducing the detrimental effects on the measurements from mechanical vibrations,ambient air turbulence,and temperature changes. In the implementation of the technique,the filtering procedure of the fringe normalization,background removal,or noise reduction must be applied to the two arbitrarily phase shifted patterns before the phase demodulation. However,due to certain experimental imperfections of any physical system that are hard to model accurately,we cannot assume any particular behavior for the intensity pattern in a general case. In this case,the two-shot phase reconstruction technique may have an unsatisfactory filtering effect during the phase demodulation. Recently,much special attention is paid to the algorithm that does not require pre-filtering. In this work, we proposed a novel two-shot phase reconstruction method that can bypass the pre-filtering with the help of the least squares iterative phase shifting algorithm. In our method,a rough estimation of the phase shift is obtained by correlation operation of two background removed fringe patterns under the approximate orthogonal characteristic of a trigonometric function. Thus,we can compute the phase using two frame phase shifting algorithm. Then,using this initial phase shift estimation,both the phase shift and background light improved by solving other N linear equation systems in a frame-wise manner. Further,the two background removed fringe patterns are updated. Iterating this process,it eventually settles down in the searched phase. In essence,this method is a two-frame version of the AIA algorithm except for the use of background terms,which is usuallydiscarded in the standard AIA algorithm. To reduce the effect of spatially varying background intensity and modulation amplitude,we divide the captured interferogram space into several blocks(for example,150×150). if the blocks are sufficiently small,we may consider that the background intensity and modulation amplitude in each block do not have pixel-to-pixel variation and can be assumed as constants. Then we select one block,and the necessary parameters are estimated by the phases and the intensity in this block. Our novel approach consists of the following steps:1)Estimate an initial phase step by s correlation operation of two background removed fringe patterns,2)Compute the measurement phase using the initial phase step,and 3)Use the obtained intermediate parameters for continually updating both the two filtered fringe patterns and the phase step until the accurate phase is reconstructed through the searched phase shift. To demonstrate,the proposed method is compared with other state-of-the-art two-frame random phase-shifting algorithms: CV and PCA&LSI, for they can accomplish the phase reconstruction universally and accurately. We choose the typical scenarios,namely open-fringe pattern,and closed-fringe pattern as our test case. Both simulations and measurement experiment results obtained using the proposed method indicate that it is a simple,albeit robust solution for phase extraction from two-frame unknown phase shift fringe pattern. ? 2023 Chinese Optical Society. All rights reserved.
    Accession Number: 20231713946103
  • Record 298 of

    Title:LCVR-based Stokes polarimeter: Principles and evaluation
    Author(s):Chang, Lingying(1); Wang, Guanru(1); Wang, Xinyou(1); Qiu, Yuehong(2); Chen, Kui(1); Liang, Chi(1)
    Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 12921  Issue: null  Article Number: 129210E  DOI: 10.1117/12.2687651  Published: 2023  
    Abstract:The polarimetric imaging system can acquire not only the target's two-dimensional light intensity distribution information but also the Stokes polarization vector information corresponding to the target light intensity distribution. The Stokes vector information can enhance the target's contrast, highlighting the target from the complex background information. The LCVR-based Stokes polarimeter uses a liquid crystal variable retardation (LCVR) instead of the rotating waveplate in conventional measurement techniques, which enables polarization measurements without moving parts. This paper first introduces the measurement principle of the Stokes vector method, the working principle of LCVR, and the parameters of commonly used evaluation indicators in polarimetric measurement systems. Then, a two-channel single LCVR-type polarimeter measurement scheme is proposed, which uses a split beam element (prism PBS, Savart plate, or Wollaston prism) and a single LCVR to obtain the full Stokes parameters of the target. Then the measurement matrix and light intensity calculation formulas for the polarimeter and polarization spectrometer were derived, and the evaluation parameters of the system (CN, RAD, EWV) were calculated. The study and evaluation analysis provide some theoretical references for studying the LCVR-based Stokes polarimeter. ? 2023 SPIE.
    Accession Number: 20234815132540
  • Record 299 of

    Title:Error analysis of FLC polarization imager in full polarization state with wide spectrum
    Author(s):Chang, Lingying(1); Chen, Kui(1); Liang, Chi(1); Qiu, Yuehong(2); Zhang, Youbiao(1); Li, Jiayi(1)
    Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 12963  Issue: null  Article Number: 129630S  DOI: 10.1117/12.3007446  Published: 2023  
    Abstract:The ferroelectric liquid crystal (FLC)-based wide spectrum polarization imager can quickly acquire the full polarization information of the target, however, the polarization elements error will affect the accuracy of the system polarization parameters (DOP, EOP, and AOP) measurement. In this paper, to investigate the influence of polarization element error on the acquisition of polarization information of the measured target, the influence of element parameter error on the measurement of target polarization parameters is analyzed. First, the working principle of FLC and the structural composition of the system of wide spectrum polarization imager based on FLC are introduced; second, the measurement matrix of the wide spectrum polarization imaging system is calculated based on the CCD spectral response curve, and the variation of the wave plate phase retardation with wavelength; then, the error model of the system for solving the full polarization parameters is established; finally, the effects of the parameter (azimuth angle F1θ, tuned rotation angle F1α, phase retardation F1δ of FLC2; azimuth angle Hθ, phase retardation Hδ of HWP; azimuth angle F2θ, tuned rotation angle F2α, phase retardation F2δ of FLC2; azimuth angle Qθ, phase retardation Qδ of QWP; azimuth angle Pθ of P) errors of each element of the polarization module on the DOP, EOP, and AOP measurements are analyzed. The simulation results show that: with the increase of the error of each element parameter of the polarization module, the measurement error of the polarization parameters are all increasing in different degrees; the error of F2α is the main factor affecting the measurement accuracy of the degree of polarization (DOP), the error of F1α is the main factor affecting the measurement accuracy of the ellipticity of polarization (EOP), and the error of F1θ is the main factor affecting the measurement accuracy of the angle of polarization(AOP); at [-2°,2°], the maximum measurement errors of DOP, EOP, and AOP are 2.83%, 6.98%, and 9.26%, respectively; when the errors of polarization element parameters are certain, the measurement errors will change with different polarization states of the target. The research method and results can provide research ideas and theoretical references for the error analysis research of the wide spectrum polarization imaging system based on FLC or other wide spectrum polarization imaging systems. ? 2023 SPIE. All rights reserved.
    Accession Number: 20240215330718
  • Record 300 of

    Title:Optical axis consistency alignment method for 1m-diameter solar telescope
    Author(s):Xing, Fu(1); Lei, Yu(1); Bindong, Ji(1); Keiwei, E.(1)
    Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 12976  Issue: null  Article Number: 1297623  DOI: 10.1117/12.3009615  Published: 2023  
    Abstract:AISM telescope is the abbreviation of Accurate Infrared Magnetic System. This telescope is the first mid infrared system internationally used for observing the solar magnetic field. The system is an off-Axis telescope with an aperture of 1 meter. The optical path is complex and the light is folded over a long distance through multiple flat and aspheric mirrors and coupled with mechanical rotation axis. The conventional alignment methods cannot be applied. This paper describes the methods for reserving assembly reference for each module and the system optical axis consistency adjustment method. The method has been verified through actual experiment and can achieve high precision. ? COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
    Accession Number: 20240315401972
天堂8在线| 欧美日韩牲爱生活| 天天日夜夜骑| 国产一级做a爱片久久毛片A| 国产A∨| 91久久久| 欧美一级特黄片| 亚洲图片视频小说| 中文字幕精品无码| 国产美女精品人人做人人爽| 免费三级片网址| 毛片免费看| 国产a区| 国产黑丝AV| 国产午夜伦鲁鲁| 国产成人网| 高清不卡一区二区| 日本人妻一区| 无码不卡视频| 免费一级av| 国产精品伦一区二区三区免费| 成年人在线视频| 亚洲91| 97精品国产| 无码午夜精品一区二区三区视频| 91亚洲精品视频| 亚洲人在线视频| 黄色片免费观看| 成人做爰免费A片视频二机片 | 免费一级大片| 午夜在线小视频| 精品国产乱码久久久久夜深人妻 | 亚洲群交| 99视频在线免费观看| 久青草免费视频| 亚洲av色图| 色翁荡熄又大又硬又粗又视频| 久久久久亚洲AV色欲av| 亚洲av色图| 国产毛片网站| 伊人黄色| 毛片免费观看| 人妻内射一区二区在线视频| 大地资源网在线观看免费官网| 二区三区无码| 国产无码www| 精品无码视频| 热久久伊人| 亚洲熟妇综合久久久久久| 九九九久久久| 天天日天天干天天操| 97人妻人人澡人人爽人人精品| 久久久午夜精品福利内容| 超碰毛片| 一级日韩| 久久久精品视频| 亚洲九九| 成人美女| 国产激情在线| 国产精品一区二区6| 无码成人动漫| 97色综合| 一级免费毛片| 亚洲视频免费在线观看| 国产精品99久久久久久白浆小说| 国产熟女鲁鲁视频| 国产三级片在线看| 伊人五月| 码人妻免费视频| 99自拍视频| 69av在线| 91免费在线视频| 日日摸日日操| 人妻春色| 91最新视频| 国产操逼视频免费观看| 少妇又色又紧又爽又刺激视频| 91高清视频| 奇米网| www.com淫荡| 亚洲成人网站在线观看| 91精品视频在线播放| 亚洲爽爽爽| 97国精产品无人区一码二码| 日韩两人性爱免费视频| 亚洲精品高清无码| 国产成人精品亚洲| 国产又大又粗| 中国女人毛片一级A片| 欧美黄片儿| 后入内射欧美99二区视频| 午夜美女福利视频| 色鬼网站| 麻豆精品无码国产在线| 高清一区二区| 操逼视频免费看| 一区二区AV| 91成人区人妻精品一区二区在线| 无码精品人妻一区二区三刘亦菲| 欧美视频三区| 中出无码| 伊人成人在线| 怡红院av在线| 国产精品久久久久久久AV超碰| 国产裸体美女| 欧美日韩性爱视频| 欧美三日本三级三级在线播放| 久久精品二区| 99在线播放| 国产中出| 欧美美女一区二区三区| 亚洲黄片在线播放| 一区二区亚洲| 日本AA大片在线播放免费看| 超碰91在线| 美国一级黄片| 国产无码专区| 91无码| 99人妻碰碰碰久久久久禁片| 99国产精品视频免费观看一公开 | 九九在线精品视频| 99爱免费视频| 欧洲一本二本专区在线看| 亚洲无码影院| 国产精品国产三级国产普通话99| 亚洲国产精品无码久久久| 久久精品毛片| 黄色一级视频免费观看| 鲁鲁视频| 伊人999| a视频在线观看| 婷婷超碰| 欧美一区二区在线| 91精品国产麻豆国产自产在线| 欧美精品久久久久久久久爆乳| 欧美黄片在线| 亚洲专区一区| 老妇高潮潮喷到猛进猛出| 精品久久一区二区三区| 韩国高清无码| 国产免费黄色| 日韩久久久| 夜夜操天天操| 久久精品视频一区二区| 久久精品国产亚洲AV无码情人| 国产欧美日韩在线| 久在线视频| 精品国产乱码久久久久电车痴汉久| 国产丰满乱子伦无码| 久久综合亚洲| 中文无码二区| 西西图吧| 亚洲AV无码牛牛影视| 国产精品99久久久久久白浆小说| 亚洲色欲色| 99精品国产91久久久久久无码| A一级黄色片| 国产丨熟女丨国产熟女| 一区二区黄片| 精品一区二区三区视频| 调教她的尿孔(H)| 无码二区在线观看| 国产一级a人与一级A片观看| 国产亚洲精品合集久久久久| 色中文字幕| 国产精品三级| 国产女主播一区| 色综合久久88色综合天天| 精品人妻一区二区三区视频53一 | 日韩欧美熟女| 夜夜操夜夜爽| 丁香五月天导航| 人妻免费视频| 无码无套少妇毛多18P小说| 国产精品一级无码| 国产高清亚洲无码| 黑人AV一区| 天天日天天摸| 国产精品久久久久久久久免费相片| 中日韩无码| 一区二区国产精品| 香蕉视频黄色片| 国产成人精品一区二区三区在线 | 自拍偷拍亚洲一区| 一区二区三区亚洲无码| 青青草免费在线视频| 最新av网址| 久久精品国产AV| 久久久久久高清毛片一级| 91精品久久人妻一区二区夜夜夜| 日本性爱视频在线观看| 秋霞免费av| 中文字幕一级片| 高清无码免费观看| 人妻在线中文字幕| 被男人疯狂揉吃奶胸视频| 欧美日韩一区二区三区四区| 精品人妻一区二区三区含羞草| 日韩无码人妻| 国产乱伦免费| 亚洲电影在线观看| 免费无码国产在线观看观喷水| 欧美性猛交| 国产精品久久久久久久久久久免费看| 黄网在线| 男人和女人操逼网站| 99久久久无码国产精品6| 久久久久久九九九九| 澳门无码| 日本一区二区三区精品| 99久久99久久精品国产片果冻| 少妇一级淫片免费放| 亚色在线| 91精品国产91久久久| 麻豆三级| 亚洲黄色在线观看| 2024国产精品| 亚洲三级在线| 午夜一区二区三区| 精品欧美一区二区久久久| 操日本美女网站| 国产超碰人人模人人爽人人添| 爆乳熟妇一区二区三区霸乳照片| 精品久久九九99| 国产美女在线观看| 狠狠操影院| 最新国产视频| 香蕉视频免费| 在线观看亚洲视频| 少妇交换HD中文| 亚洲成av人片在线观看| 日韩精品在线看| 天肏AV| 国产69精品久久久久APP下载| 欧美三级网站| 琪琪午夜成人久久电影网| 99久久国产热无码精品免费| 亚洲熟女乱伦| 亚洲AV色香蕉一区二区三区老师| 小小拗女一区二区三区| 国产精成人品日日拍夜夜免费| 亚洲日本天堂| 日本东京热视频| 国产成人精品在线| 国产一级毛片精品A片在线美传媒| 无码国产| 97操操操操| 黄色链接在线观看无码| 99久久久无码国产精品免费了| 人妻中文字幕一区二区三区| 99热这里| 高清无码不卡视频| 国产精品亚洲综合| BAOYU| 国产一级av在线| av黄片| 凹凸视频国产日韩欧美小说| a毛片免费看| 美女掰穴| 亚洲国产欧美日韩在线观看第一区| 久久综合伊人77777蜜臀| 日本不卡网站| 日韩午夜| 免费看操逼视频| 午夜福利视频网站| 日本一本视频| 午夜福利成人| 国产精品久久久久无码AV| 欧美日韩一区二区三区四区五区| av色在线| 一区在线看| 性免费| 成人美女| 中文乱码字幕在线中文乱码 | 精品999久久久一级毛片| 一区二区三区免费观看| 91久久免费视频| 久精品在线| 操逼喷水无码| 无码人妻一区二区三区在线视频 | 亚洲va天堂va国产va久| 亚洲五月天婷婷| 青青草久久久| a片一级| 一级片在线播放| 大鸡巴网站| 夜夜草天天干| 成人午夜福利视频| 亚洲天堂精品一区| 国产精品毛片久久久久久| 欧美精品久久久久久| 人妻无码熟妇乱又视频| 欧美成人社区| 波多野结衣一区二区三区| 天天操网站| 末成年女AV片一区二区三区 | 国产黄色电影院| 精品久久久久中文字幕人妻| 91电影| 凸凹激情在线视频观看| 日日干天天操| 无码精品视频| 产国传媒91一区久久无码| 国产精品99久久久久久www| 9l视频自拍九色9l视频成人| 国产AV网站入口| 国产伦精品一区二区三区照片| 久久AV无码| 丁香婷婷网| 熟女一区二区三区| 人人愛人人操| 97看片| 国产一级A片夜天码免费看| 99久久久无码国产精品试看蜜鲁 | 久久国产精品无码一级毛片| 国产成人在线看| 欧美91视频| 欧美日韩系列| 成人欧美一区二区三区黑人动态图| 五月天激情婷婷基地| 秋霞一区| 免费费一级黄色电影| a在线视频| 中文在线一区二区三区| 国产色网站| 在线观看网站深夜免费| 国产一级特黄妇女A片40| 白洁性荡生活第90章| 97人妻超碰| 亚洲精品无码高潮喷水A片软| 91久久精品无码一区二区| 国产污视频网站| 欧美国产一区二区三区激情无套| 天天插天天干| 综合在线视频| 日韩啪啪视频| 久久AV网站| 欧美国产一区二区三区激情无套| 日韩无码视屏| 免费午夜视频| 国产一区中文字幕| 一区二区三区欧美视频| 国产精品自产拍高潮在线观看| 日本一区二区三区| 国产小视频在线播放| 无码在线免费视频| 日韩久久精品| 欧美日韩一区二区三区在线观看| 3p无码| 操人网站| 精品久久久久久久久亚洲| 无码一区在线播放| 91成人无码看片在线观看网址| 91免费在线看| 91久久婷婷| 激情一区二区| 欧美精品在线播放| 少妇高潮毛片免费看欧美| 欧美牲| 日韩精品人妻| 鲁鲁视频| 欧美在线观看视频| 人人操99| 国产精品美乳在线观看| jzzijzzij日本成熟少妇| 一级黄片在线| 69久久久| 欧美一区二区三区婷婷五月老人| 久久中文字幕av| 狠狠干av| 欧美性爱专区| 九九九国产| 欧美日韩偷拍视频| 高清无码在线观看一区| 国产成人久久| 精品国产鲁一鲁一区二区红桃影视| 欧美第一页| 伊人色色| 久久99免费视频| 影音先锋在线观看资源日韩一区二区| 亚洲欧洲天堂| 久久亚洲精品视频| 免费A片视频| AV电影在线免费观看| 麻豆啪啪| 精品无码人妻一区二区三区 | 色一情一乱一乱一区91Av| 性生交大片免费看| 亚洲av影音| 亚洲精品无码久久久久av| 无码国产精品一区二区| 国产精品无码久久久久久免费| 91国在线| 91精品国产乱码久久久久久| 麻豆久久| 日韩欧美中文字幕在线观看| 超碰黄色| 少妇被黑人到高潮喷出白浆 | 99精品成人无码A片观看金桔| 91精彩刺激对白露脸偷拍| 亚洲黄色电影免费观看| 免费看黄色动漫| 亚洲色无A片一区二区夜夜嗨| 91精品一区二区三区久久久久久| 精品欧美一区二区三区久久久| 91视频污污污| 国产色网站| 日韩激情AV| 欧美一级免费| 国产精品亚洲无码| 一区二区精品| 麻豆精品蜜桃视频网站| 一级毛片AAAAAA免费看99| 亚洲激情在线| 中文字幕在线视频网站| 伊人黄色电影| 亚洲精品一区二区三区在线观看 | 亚洲免费成人| 国产日韩欧美| 国产视频久久久| 亚洲精品久久夜色撩人男男小说| 黄色大片网址| 免费看一级黄片| 日本黄色高清视频| 日韩高清无码一区| 久久久久无码| 日本人妻中文字幕| 国产精品美女久久久久久久久久久| 91精品国产91久久久久游泳池| 亚洲区欧美区小说区在线| 国产精品无码一区二区桃花视频| av黄片| 欧美人人操人人舔| 风间由美一区二区| AV一级片| 中文字幕在线免费| 91日本| 一区二区人妻| 久久中文精品| 中文精品久久久久人妻不卡无码| 亚洲无码精选| 男人天堂视频在线| 7777精品久久久久久| 亚洲黄色电影| 国产中文字幕在线观看| 亚洲精品国产| 无码流出 的搜索结果 - 91n| 中文字幕国产视频| 亚洲熟女乱综合一区二区三区| 国产一级内射| 97精品一区二区三区| 久久无码区| 亚洲小说区图片区| 久久毛片视频| 日本无码视频在线观看| 懂色av色香蕉一区二区蜜桃| 青青超碰| 欧美天天| 天天操天天干天天| 宝贝乖~腿弄大一点就不疼了| 黄色AA大片| 久久精品熟女亚洲av麻豆| 日本国产视频| 91久久久| 国产亚洲AV永久无码国产天堂| 欧美在线视频一区| 久久久久久精品一级毛片蜜| 69av国产| 欧美日韩精品在线| AV不卡在线| 狠狠躁夜夜躁XXXXAAAA| 一区无码视频| 水果派解说一区二区三区在线观看| 国产69精品久久久久APP下载| 成人A视频| 国产a毛片| 综合激情五月婷婷| 无码一级毛片一区二区视频孕妇| 亚洲高清在线观看| 欧美一级黄色网| 欧美三日本三级三级在线播放| 91看片| 超碰99在线| 黄色一区二区三区| 热久久伊人| 国产精品美女久久久久AV超清| A片在线播放| 秋霞一级片| 少妇A片免费网站| 中文无码日本一级A片久久影视| 国产日韩欧美在线| 天天日狠狠干| 久草成人在线| 黄视频网站| 久久精品免费电影| 国产福利在线| 日韩精品操屄| 亚洲精品字幕在线观看| 三级精品2024| 亚洲成人自拍| 无码aⅴ一区二区三区门票价格表| 天堂精品| 亚洲天堂黄色| 久草中文在线| 国产伦理一区| 99热在线观看| 红桃在线无码精品国产| jzzijzzij亚洲熟女少妇18| 波多野结av衣东京热无码专区| 女同性恋一区二区| 国产精品毛片一区二区| japan极品人妻videos| 爆乳熟妇一区二区三区蜜臀Av| 无码成人一区二区三区入厕偷拍| 亚洲精品毛片| 饱满福利导航| 久久久夜色精品亚洲| 日韩欧美在线看| 中国国产黄片| 欧美性爱在线视频| 国产精品99久久久久久人 | 久久精品精品无码一区三区| 亚洲国产欧美日韩| 亚洲av播放| 亚洲中文字幕乱码无码一区二区| 色婷婷亚洲| 91久久久久久久| 国产精品日韩在线| 日韩无码一区二区三区| 欧美三日本三级少妇三99| 麻豆乱伦AV| 色综合精品| 久久久久久久久久久久久久久久久久 | 超碰在线公开| 无码精品久久一区二区三区武则天| 国产女人18水真多18精品一级做| 性无码一区二区三区在线观看| 人妻熟女777视频一区| 99久久免费看精品国产一区| 草草网站| 91精品久久| 国产v亚洲v天堂无码久久久91| 国产精品久久久久久久久免费桃花| 色婷婷综合久久| 三级视频在线| 国产在线网址| 欧美精品久久久久久| 欧美日韩俄乌国产男女操逼逼视频 | 日韩国产欧美一区| 亚洲视频三区| 成人免费视频网站| a国产视频| 午夜毛片视频| 日本三级少妇三级99夜在线观看| 国产性爱网| 国产高清无码在线播放| 国产一级特黄大片视频播放| 高清无码久久| 国产精品高潮呻吟久久| 亚洲无码视频在线观看| 伊人成人电影| www夜片内射视频日韩精品成人| 国产老熟女伦老熟妇精品| 影音先锋中文字幕资源6| 国产又黄又爽| 日韩一二三四区| 国产午夜精品无码一区二区| 日韩无码网| 91九色在线| 国产精品女主播一区二区三区| 无遮挡的毛毛片| 午夜男人视频| 久久久久久久久精| 日韩无码三级| 五十路在线| 日韩三级在线| 黑人巨大精品欧美一区二区免费 | 日韩精品无码一区二区三区久久久| 亚洲视频久久| 亚洲aaa| 欧美特黄视频| 天天干夜夜操| 久久精品中文字幕| 全黄做爰毛片免费看| 久久久黄色电影| 国产AV一级| 九九热国产| 91精品无码少妇久久久久久网站| 国产成人在线视频观看| 亚洲综合小说| 日韩av电影在线观看| 18禁免费网站| 91n免费处女在线破视频| 秋霞三级伦电影| 日韩av电影在线播放| 操碰视频| 91亚洲国产成人精品性色| 日本三级视频| 亚洲天堂一区二区| 色天堂网址| av黄片免费在线观看| 国产一级免费片| 国产黄片久久| 天天燥日日燥| 丰满岳跪趴高撅肥臀尤物在线观看| 日韩无码免费电影| 国产精品无码一区二区毛片视频| 日韩中文字幕在线视频| 国产剧情自拍| 日韩无码久久| 欧美色图| 久久精品免费电影| 青娱乐最新视频| 欧美极品少妇×XXXBBB| 曰本无码人妻丰满熟妇啪啪| 日日爽夜夜爽| 国产精品内射婷婷一级二| 国产女同互慰在线观看| 国产精品99久久久久久白浆小说| 欧美一区在线视频| 三上悠亚一区二区| 成人性爱视频网站| 操逼国产| 国产一级AV黄片| 一级片免费网站| 毛片一区二区| 成人在线免费视频| 麻豆一级片| 伊人婷婷五月天| 日韩无码人妻| 成人精品| 国产一区AV在线| 欧美中文在线观看| 国产成人免费视频| 色欲av永久无码精品无码蜜桃| 丁香五月天色| 香蕉视频黄色片| 欧美日韩人妻精品一区二区三区| 国产精品久久久久久久久免费桃花 | 国产人妻鲁鲁一区二区| 91精品国产99久久久久久久| 91日日夜夜| 蜜桃成人无码区免费视频网站| 亚洲精品第一综合99久久| 国产精品不卡一区二区三区| 国产精品视频自拍| 国产a毛片| 午夜欧美一区二区三区在线播放| 日韩乱伦中文字幕| 久久久久一区| 黄色A一级狂操| 精品久久久久久久久亚洲| 亚洲无码在线免费观看| 国产变态操逼视频| 爱人AV无码一起草| 一区二区三区免费在线观看 | 欧美熟妇精品一区二区蜜桃视频| 欧美黄色精品| 高清无码毛片| 永久成人无码激情视频免费| 欧美人与性动交α欧美精品| 91视频官网| 精品成人在线| 久久久黄片| 天天操天天操天天射| 免费看一级黄片| 91色逼资源| 一级a一级a爰片免费免免免下载| 亚洲爆乳无码奶水一区二区三区 | 久久午夜精品| 国产精品美乳在线观看| 亚洲性在线| 99久久婷婷国产综合精品电影| 超碰 97一区二区| 国产高清视频在线| 日韩精品中文字幕一区二区三区| 欧美三级片在线| 国产精品极品白嫩在线| 日本天堂在线| 97干成人| 日本性爱网址| 日本东京热视频| 青青草视频下载| 国产91丝袜在线熟女| 亚洲精品电影| 国产老熟女伦老熟妇精品| 国产在线一区二区| 91久久九色| 波多野结衣无码一区| 尤物在线| 一区二区三区亚洲视频| 欧美日韩亚洲国产| 欧洲操逼视频| 国产一区免费| 亚洲无码国产精品| 一级性爱视频免费观看| 免费一级大片| 婷婷九月色| 秋霞午夜福利视频| 国产女主播视频| 麻豆人妻少妇69hd| 无码国产精品一区二区| 无码日本精品人妻一区二区免费| 十八禁视频网站| 校花被网站免费看视频| 免费看一级高潮毛片| 成人H动漫精品一区二区无码| 国产三级精品三级在线观看四季网| 天天舔天天干| 99re只有精品| 99精品免费观看| 久操电影| 女人高潮被爽到呻吟在线观看| 亚洲国产影院| 91精品在线播放| 亚洲精品aaa| 黑寡妇精品欧美一区二区毛| 久久久久久久久影院| 免费一级a毛片免费观看欧美大片| 国产熟女乱伦文学| 全肉变态重口调教高辣小说| 国产主播在线播放| 亚洲乱码一区二区三区在线观看 | 国产一区二区高清| 国产视频黄片| 国产成人一区二区三区| 亚洲欧美日韩在线播放| 一本一道久久a久久精品蜜桃| 国产欧美欧洲| 国内精品在线播放| 乱伦综合熟女| 国产成人精品无码| A级性爱视频| 久久毛片视频| 激情久久AV一区AV二区AV三区| 无遮挡的毛毛片| 麻豆射区| 91福利在线观看| 国产精自产拍久久久久久蜜| 爱草视频| 亚洲人精品午夜射精日韩 | 亚洲AV人人爽人人夜| 亚洲精品强奸乱伦| 91精品国产乱码久久久久| 亚洲精品久久夜色撩人男男小说| 欧美日韩专区| 99re99| 六十路熟妇| 翔田千里av一区二区三区| 欧美五十路| 日本无码免费A片无码视频| 免费h片| 国产又粗又黄又爽又硬的| 亚洲精品一区二区三区成人片| 国产精品久久久久久久AV超碰| 日韩av电影在线播放| 国产一码二码三码四码无码| 自拍偷拍欧美日韩| 国产精品精品| AV合作在线导航| 国产在线观看AV| 亚洲精品一| 中文乱码字幕在线中文乱码| 欧美熟女一区| 国产午夜一区二区| 国产精选视频在线观看| 亚洲无码操逼| 欧美日韩牲爱生活| 日韩一级黄色电影| 日韩无码乱伦视频| 久久久99精品| 天天摸日日摸| 99这里只有| 国产人妻鲁鲁一区二区| 理论在线视频| 高潮毛片又色又爽免费| 欧美日精品| 亚洲熟女乱熟乱熟妇综合网二区| 公天天吃我奶躁我的在线观看| 国产chinese中国hdxxxx| 亚洲精品久久久久久中文传媒| 岛国激情一区二区三区| 你懂的电影| 无码H乳在线看| 国产老女人乱仑| 欧美久久一区二区| 动漫精品无码| 成人性生交大片免费看4| 色婷婷久久91精品一区二区三区 | 18无码国产在线看不卡动漫| 国产一区二| 欧美成人第26集| 欧美草草| 亚洲天堂影院| 久草免费福利视频| 天天爱综合| 黄片免费下载| 无码操逼视频在线观看| 国产一级a毛一级a做免费视频| 我不卡影院| 国产AV国产精品无套内谢下载| 亚洲免费成人网| 国产精品偷伦视频免费看2023| 欧美自拍一区| 国精品无码一区二区三区| 日韩精品无码一区二区三区久久久| 国产色综合天天综合网| 人妻一区二区在线| 在线不卡视频| 国产一级免费视频| 高潮喷水波多野结衣在线观看| 黄色高清无码| 99久久影院| 国产一区二区三区| 熟女二区| 向日葵视频在线观看| 无码一本| 最新中文字幕在线视频| 日日躁夜夜躁| 麻豆国产馆老熟妇高潮| 99精品免费久久久久久久久日本| 国产精品一级片| 亚洲无码精品在线观看| 一级α片免费看刺激高潮视频| 免费看h网站| 国产一区二区精品无码| 国产AV高清| 被男人疯狂揉吃奶胸视频| 久久久国产熟女一区二区三区| 九色视频在线观看| 国产极品jizzhd欧美| 99精品一区| 谁有毛片网站| 日本操逼逼| 人妻体内射精一区二区三区| 波多野结衣一区二区| 国产在线观看黄色| 国产精品一区在线播放| 丁香五月天激情| 国产女人18毛片水真多1KT∧| 国产精品扒开腿做爽爽爽视频| 91九色人妻| 香蕉三级片| 青青草原在线视频| 亚洲系列第一页| 亚洲无码高清久久精品国产| 日日干夜夜草| 国产激情| 国产网曝门事件福利视频| 日本中文字幕在线播放| 午夜福利视频网站| 亚洲一区二区视频| 超碰97资源站| 一块操欧美性爱| 人人爱人人操| 国产精品免费在线| 一级特黄孕妇AAA| 高清无码网址| 高清无码三级片| 神午久久| 欧美乱码精品一区二区三区| av亚洲欧洲日产国码无码苍井空| 亚洲精品入口| 国产裸体美女永久免费无遮挡| 天堂亚洲| 亚洲免费在线视频| 亚州淫乱网| 欧美一区二区三| 精品午夜一区二区三区在线观看| 一区二区自拍| 综合五月婷婷| 影音先锋男人站| 欧美午夜三级| 久久国产精品影视| 国产精品自产拍高潮在线观看| 久久精品电影| 国产性爱一区二区三区| 国内精品久久久久久影视8| 久久久一区二区三区四区| 亚洲国产精品毛片AV不卡下载| 久久精品国产亚洲av丁香| 成人影片免费观看| 国产AV无码专区| 26uuu欧美| 午夜精品在线观看| 超碰导航| 久久1热| 国产乱伦一区二区三区| 日韩少妇无码视频| 99久久婷婷国产综合精品电影| 日本免费在线观看| 99久久久无码国产精品免费了| 一级片在线免费观看| 欧美香蕉视频| 一区二区三区亚洲| 成人欧美一区二区三区白人| 四虎免费看黄| 波多野结衣亚洲一区| 曰本无码人妻丰满熟妇啪啪| 26uuu成人网站| 亚洲男人的天堂av| 亚洲国产成人精品女人久久久| 婷婷五月天久久| 国产69精品久久久久APP下载| 亚洲精品少妇| 欧美亚洲精品在线观看| 亚洲黄色一区二区三区| 久久精品中文字幕| 国产精品一级二级三级| 亚洲AV综合色区无码| 一区二区三区免费观看| 最好看的2018中文在线观看| 嫩草91影院| 真实乱偷全部视频| 蜜臀av成人精品蜜臀av| 欧美性爱日韩高清| 无码在线不卡| 二区视频| 色欲影视综合网| 伊人三级| 少妇Av导航| 精品少妇一区二区三区免费看| 豪妇荡乳1一5潘金莲| 精品丰满人妻无套内射| 久久午夜免费视频| 日韩人妻精品中文字幕| 国产精品扒开腿做爽爽爽视频| 操逼网站免费|