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Pre-stressing force exerting nailing device, has long nut coaxially arranged with nail, supporting phase contact part whose end is fixed with force bracket, and jack whose end is in contact with forcing screw. 专利
申请日期: 2018-01-01, 公开日期: 2018-04-17
作者:  JIA J GAO R TU B CHENG L HUANG Q YA
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/02
2-(dibasic) methyl acrylic ester compound and its use. 专利
申请日期: 2006-01-01, 公开日期: 2006-03-08
作者:  YU C XU L CUI D ZHANG H TU S LI B
收藏  |  浏览/下载:3/0  |  提交时间:2020/01/02
New 1,2-disubstituted allyl aryloxy phthalate compounds, are used as herbicides. 专利
申请日期: 2006-01-01, 公开日期: 2006-03-22
作者:  YU C XU L CUI D ZHANG H TU S LI B
收藏  |  浏览/下载:2/0  |  提交时间:2020/01/02


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