机构

• 长春光学精密机械与物... [1]
• 南京天文光学技术研究... [1]
• 云南天文台 [1]
• 植物研究所 [1]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [3]
• 期刊论文 [1]

发表日期

• 2022 [1]
• 2012 [1]
• 2008 [1]
• 2004 [1]

学科主题

• Astronomy ... [1]
• Biodiversi... [1]
• Environmen... [1]
• 天文技术与方法::有... [1]
• 天文望远镜::光学/... [1]

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Disentangling the effects of the surrounding environment on street-side greenery: Evidence from Hangzhou 期刊论文  OAI收割 ECOLOGICAL INDICATORS, 2022, 卷号: 143 作者:  Zhu, Jinxia;  Qiu, Lefeng;  Su, Yanjun;  Guo, Qinghua;  Hu, Tianyu   |  收藏  |  浏览/下载：16/0  |  提交时间：2024/03/07 Green view index  Surrounding environmental characteristics  Facade design characteristics  Vertical green characteristics  Street enclosure   Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE) 会议论文  OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者:  Wang D. 收藏  |  浏览/下载：37/0  |  提交时间：2013/03/25 The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well  positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision  a focusing mechanism is needed. To majority of large space-based telescopes  and the scheme design is reasonable and practicable. 2012 IEEE.  the general way to do this would be to use a reflector  which was located in the backfocal distance. One of typical schemes of this mechanism was introduced  however  because of the big axial size  the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced  which has such advantages of small size  high accuracy and low mass. The design and test methods had been discussed. According to the results  the repeatability positioning accuracy is 0.0025mm   The conceptual design and simulation of 30m RIT 会议论文  OAI收割 Conference on Ground-Based and Airborne Instrumentation for Astronomy II, Marseille, FRANCE, 2008-06-23 作者:  Liu Z(刘忠);  Dai YC(戴懿纯);  Jin ZY(金振宇);  Xu J(许骏);  Lin J(林京) 收藏  |  浏览/下载：18/0  |  提交时间：2016/04/06 Extremely Large Telescope  Ring Interferometric Telescope  Simulation  Conceptual Design  Segmented Mirror  PSF  Phasing  Active Control  Enclosure  Adaptive Optics   Unique enclosure design for CFGT 会议论文  OAI收割 Glasgow, Scotland, 2004-6-21 作者:  Zhengqiu YAO;  Peng ZHUANG;  Fang ZHOU 收藏  |  浏览/下载：24/0  |  提交时间：2013/12/23 CFGT  enclosure design  dome seeing  wind buffet