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High-compatibility soluble glass modified polyurethane grouting material and preparation method thereof 专利
申请日期: 2016-01-01,
作者:  MIAO JIBIN;  YANG BIN;  CHENG HUA;  FANG CHAO;  ZHENG ZHENGZHI
收藏  |  浏览/下载:10/0  |  提交时间:2019/04/19
Preparation of cyclic aliphatic polyester involves adding phase transfer catalyst to 2-bromo carboxylate in organic solvent, reacting, extracting, filter-separating ethyl ether layer, evaporating, drying and adding stannous octoate. 专利
申请日期: 2012-01-01, 公开日期: 2012-11-21
作者:  FANG Y ZHENG Y
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/18
Virtual synchronous inverter with fast transient inrush fault currents restraining method thereof 专利
公开日期: [db:dc_date_available]
作者:  Shuai, Zhikang;  Huang, Wen;  Shen, Zheng;  Wang, Jun;  Fang, Junbin
收藏  |  浏览/下载:8/0  |  提交时间:2019/12/17


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