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Grinding hard and brittle material small hole forming grinding wheel, has plate-shaped ladder-shaped and ladder-shaped sections formed at standard screw thread angle, which is determined based on modification amount. 专利
申请日期: 2013-01-01, 公开日期: 2013-02-27
作者:  BAO Y HUANG J CAO B GAO H YANG A GU
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/13
Safety evaluation decision system for construction crane, has display input module, interface module and storage module which are electrically connected with control module which is connected with collecting module through Ethernet. 专利
申请日期: 2013-01-01, 公开日期: 2013-06-12
作者:  CAI F HUANG Y YANG S PAN Z SONG X W
收藏  |  浏览/下载:8/0  |  提交时间:2019/12/13


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