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浏览/检索结果: 共4条，第1-4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 Double-stage gate spiral wave pushing device, has external circuit provided with spiral wave excitation antenna, and screen grate provided with hole accelerate grate and speed reducing grate. 专利 申请日期: 2015-01-01, 公开日期: 2015-03-25 作者:  HAO J XIA G XUE W WANG P WU Q ZHOU 收藏  |  浏览/下载：9/0  |  提交时间：2019/12/09 Electric propulsion device, has discharge circuit cavity fixed at inside of cylinder cavity of air inlet, input output line connected with metal plate, and discharge circuit and cavity fixing plate connected with metal plate through bolt. 专利 申请日期: 2015-01-01, 公开日期: 2015-03-11 作者:  HAO J XIA G XUE W WANG P WU Q ZHOU 收藏  |  浏览/下载：7/0  |  提交时间：2019/12/09 Boron mother alloy preparing method, involves selecting boron element concentration in boron mother alloy, performing boron mother alloy ingot crushing process, and performing mother alloy ingot preparing process by using casting process. 专利 申请日期: 2014-01-01, 公开日期: 2014-12-10 作者:  JIANG D LI P WANG D TAN Y SHI S XUE 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/11 Bolt interlocking device for use in single-cylinder bolt-type telescopic arm of crane, has upper cylinder pin locking dovetail groove and lower cylinder pin locking mechanical lock through cylinder pin body so as to lock arm pin. 专利 申请日期: 2011-01-01, 公开日期: 2011-08-17 作者:  TENG R XU P XUE J LIU B HAO M 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/18