中国科学院机构知识库网格
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Water use efficiency of China's karst ecosystems: The effect of different ecohydrological and climatic factors 期刊论文  OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2023, 卷号: 905, 页码: 167069
作者:  
Zhou, Xu;  Ao, Yang;  Jiang, Xiao;  Yang, Shengtian;  Hu, Yuxue
  |  收藏  |  浏览/下载:20/0  |  提交时间:2024/01/04
Water use efficiency of China's karst ecosystems: The effect of different ecohydrological and climatic factors 期刊论文  OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2023, 卷号: 905, 页码: 16
作者:  
Zhou, Xu;  Ao, Yang;  Jiang, Xiao;  Yang, Shengtian;  Hu, Yuxue
  |  收藏  |  浏览/下载:31/0  |  提交时间:2023/11/29
Application of particulate reinforced aluminum matrix composite in airborne photoelectric turret (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
作者:  
Wang P.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
In order to design and manufacture more excellent airborne photoelectric stable turret  modulus of elasticity of 213 GPa and thermal expansion coefficient of 7.9106/K. The frame has decreased the maximum deformation by by 60% and increased the fundamental frequency by 65% as compared with those of aluminum alloy materials  a new type of aeronautical material-particulate reinforced aluminum matrix composite (SiC/Al composite) is investigated. Several crucial technologies  respectively as shown by finite element analysis results. Those are confirmed by vibration test furthermore. Therefore  such as pressureless infiltration technology  a significant lightening effect is achieved and the thermal control load is also reduced. The test result indicates that the stable accuracy of the system achieves 19.8rad and the optical-axis parallelism of pay load is 0.1mrad. The research applies the SiC/Al composites to airborne photoelectric platforms  interface reaction controls and plate's welding are systematically studied. Then  which makes a effective exploration for the new aeronautical material's application. 2011 IEEE.  using SiC/Al composites  the airborne photoelectric stable turret frame is successfully prepared in density of 2.94 g/ cm3