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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 Copper crucible consists of bottom graphite substrate formed by combining small-sized graphite pads, hollow recess or convex grooves provided on side walls of graphite pads, and adjacent graphite pads are joined by grooves. 专利 申请日期: 2015-01-01, 公开日期: 2015-04-22 作者:  JIANG D TAN Y SHI S WANG D XUE B 收藏  |  浏览/下载：8/0  |  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 Method for preparing boron master alloy, involves crushing industrial silicon raw material to powder, and adding powder and inorganic acid solution into reaction kettle followed by smelting and casting. 专利 申请日期: 2014-01-01, 公开日期: 2014-12-03 作者:  JIANG D TAN Y SHI S WANG D XUE B 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/11 Root diagonal twisted blade type axial flow fan, has inlet channel joint, air inlet chamber, driving motor, supporting ring, supporting plate, impeller and discharging section arranged in order. 专利 申请日期: 2013-01-01, 公开日期: 2013-04-03 作者:  JIANG Z WANG X XUE J XU S WU L LUO 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/13