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Analysis on Effect of Filling Glue between the Frame and Lens with Small Aperture 会议论文  OAI收割
Xian, PEOPLES R CHINA, 2020-10-15
作者:  
Song, Yang;  Ye, Jing;  Chai, Wenyi;  Chu, Nanqing;  Xu, Yang
  |  收藏  |  浏览/下载:32/0  |  提交时间:2021/07/23
Puerarin incorporated into a porous PLGA/TCP scaffold promotes osteogenesis in vitro and in vivo 会议论文  OAI收割
北京, 2017
作者:  
Huijuan Cao;  Ling Li;  Cuishan Huang;  Keda Shi;  Qinqiang Zeng
  |  收藏  |  浏览/下载:27/0  |  提交时间:2018/02/02
Wind field measurement for the supplementary pollination using two types unmanned helicopter in hybrid rice breeding 会议论文  OAI收割
American Society of Agricultural and Biological Engineers Annual International Meeting 2013, Kansas City, MO, United states, July 28-31, 2013
作者:  
Wang P(汪沛);  Luo XW(罗锡文);  Hu L(胡炼);  Zhou ZY(周志艳);  Lan, Yubin
收藏  |  浏览/下载:25/0  |  提交时间:2013/10/04
Autocollimation form dual-frequency laser diffraction grating interferometer design and analysis (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Wang C.-G.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
Propose a new measurement system of autocollimation form laser grating heterodyne interferometer. Take grating diffraction and polarization optics as theoretical foundation  second  furthermore  combined with electronics knowledge to analyze the system. First  make use of autocollimation diffraction of grating  measurement information obtained by dual-frequency laser belongs to ac signal  the interferometer measurement system take grating pitch as measuring datum  the structure is simple  possess great gain and high signal-noise ratio  therefore  stable  completely overcome the disadvantages of DC level drift caused by light intensity variation of single-frequency laser  system can achieve nanometer resolution. 2010 IEEE.  reduce the impact of environmental factors  easy to install and debug  measurement error is small  
The Characteristics and Distribution of the Source Area of Aeolian Sand in the Valley Lhasa River's Lower Reaches, Tibet, China 会议论文  OAI收割
Denver, JUL 31-AUG 04, 2006
作者:  
Chang Chunping;  Zou Xueyong;  Zhang Chunlai;  Huang Yongmei
  |  收藏  |  浏览/下载:14/0  |  提交时间:2020/02/13