中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共3条,第1-3条 帮助

条数/页: 排序方式:
Effect of irrigation methods on root growth, root-shoot ratio and yield components of cotton by regulating the growth redundancy of root and shoot 期刊论文  OAI收割
AGRICULTURAL WATER MANAGEMENT, 2020, 卷号: 234
作者:  
Wang, Jiangtao;  Du, Gangfeng;  Tian, Jingshan;  Zhang, Yali;  Jiang, Chuangdao
  |  收藏  |  浏览/下载:20/0  |  提交时间:2022/03/01
Trend Analysis of Relationship between Primary Productivity, Precipitation and Temperature in Inner Mongolia 期刊论文  OAI收割
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION, 2018, 卷号: 7, 期号: 6
作者:  
Chen, Tianyang;  Xie, Yichun;  Liu, Chao;  Bai, Yongfei;  Zhang, Anbing
  |  收藏  |  浏览/下载:29/0  |  提交时间:2022/02/25
Study on the influence and disposal method of the micro-cracks of optical components (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
Xuan B.;  Xie J.-J.;  Xie J.-J.;  Zhang H.;  Zhang H.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
Micro-crack is one of the most effective factor to the intensity and service life of optical components. Owing to the micro-crack on surface  actual strength of optical components is reduced severely  even less than ten-percent of its theoretical strength. According to fracture mechanics  the mechanisms of the formation and propagation of micro-crack and the growth theory of sub-critical micro-crack are discussed in the paper firstly. Based on practice  an on-line test method disposing etching holes-the molecule-infiltrating method and the principles of acid-etching method disposing micro-crack are described. Followed by the demolishing mechanism of abrasives and a more reasonable removal redundancy of fine-grinding and polishing during  optical production is given by using abrasives in different-size orderly. 2009 SPIE.