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Environment-friendly water treatment agent and preparation method thereof 专利
申请日期: 2014-01-01,
作者:  XIANG FENG;  HE YINGXIA;  ZHANG JIAN AN;  WU MINGYUAN;  WU QINGYUN
收藏  |  浏览/下载:14/0  |  提交时间:2019/04/19
Pull pressure loading head design method under concrete multi-test, involves fixing bolt pull rod with loading plate, connecting loading plate with four pre-embedded bolts, and adjusting pressure loading head and test piece with each other. 专利
申请日期: 2014-01-01, 公开日期: 2014
作者:  HE Z SONG Y
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/11


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