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浏览/检索结果: 共5条，第1-5条 帮助 限定条件 内容类型：专利     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Multistage intelligent entrance guard system that do not to select unblock more based on fingerprint identification 专利 申请日期: 2015-01-01, 作者:  ZHU NENGFU;  YE ZHANGWEN;  XIAO ANNAN;  DAI XIANYU;  TANG JIN 收藏  |  浏览/下载：15/0  |  提交时间：2019/04/19 Electrolytic grinding machine work-piece main shaft working unit, has mercury electric conduction sliding ring whose screw thread is fixed with locking nut, and chuck screw fixed with chuck through connecting disk. 专利 申请日期: 2014-01-01, 公开日期: 2014-07-23 作者:  JIN Z LI Z DAI H SUN Y 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/11 Cylindrical conductive slip ring electric contact abrasion experiment table, has mechanical device provided with support upright post, supporting plate and driving motor, and digital display counter for displaying rotating speed of ring. 专利 申请日期: 2013-01-01, 公开日期: 2013-07-17 作者:  DAI H JIAO Z JIN Z KANG R LIU J 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/13 Lever-type sealing ring pre-deforming force load, has pushing bolt that is arranged at lower end on chassis so as to form length of lever of distributed spiral loading mechanism. 专利 申请日期: 2013-01-01, 公开日期: 2013-04-10 作者:  JIN Z KANG R DAI H ZHOU P 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/13 Floating polishing head, has lower and upper covers whose convex spherical surface is connected with concave spherical surface and overlapped with double-spherical bearing structure and swing point, which is center point of convex surface. 专利 申请日期: 2013-01-01, 公开日期: 2013-07-17 作者:  DAI H JIN Z ZHANG B HONG N GU C 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/13