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Preparing polyalphaolefins catalyst useful for large scale polymerization process comprises catalyst component (comprised of e.g. magnesium chloride), co-catalyst alkyl aluminum B and external electron donor C. 专利
申请日期: 2018-01-01, 公开日期: 2018-01-19
作者:  WANG L GAO Z YU L WANG H LI W ZHENG
收藏  |  浏览/下载:4/0  |  提交时间:2019/12/02
Combined type dynamic three axis movable simple shear pressure chamber system for measuring soil sample radial strain, has axial piston rod and piston rod connected to water pressure chamber through sealing header. 专利
申请日期: 2015-01-01, 公开日期: 2015-11-04
作者:  KANG X ZHAO H YU S ZHENG X
收藏  |  浏览/下载:8/0  |  提交时间:2019/12/09
Internal electron donor compound useful for preparing alpha-olefin polymerization catalyst component, comprises two electron donors i.e. first electron donor and second electron donor. 专利
申请日期: 2014-01-01, 公开日期: 2014-02-05
作者:  WANG L ZHENG G YU L CHEN Q GAO T DO
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/11
Semi-submersible drilling crude oil storage platform drilling system, has floating platform connected with motion coupling through connecting arm and main platform, where movement part of main platform is arranged on floating platform. 专利
申请日期: 2014-01-01, 公开日期: 2014-02-19
作者:  ZHOU X WANG Y DAI Y HU Z YU H ZHENG
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/11


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