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浏览/检索结果: 共2条，第1-2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 Extracting and separating 1,3-propylene glycol from fermentation liquid, by mixing sugar and/or salt to liquid dissolved in glycol to obtain mixture, adding organic solvent to mixture and separating solution into aqueous and organic phases. 专利 申请日期: 2014-01-01, 公开日期: 2014-08-06 作者:  XIU Z GAO X MU Y SUN Y SHENG A 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/11 Automatic four-degrees-of-freedom aircraft engine assembling heavy multi-shaft gesture regulating platform, has left lifting mechanism and right lifting mechanism that are symmetrically fixed on platform base and driven by servo motor. 专利 申请日期: 2013-01-01, 公开日期: 2013-07-17 作者:  GAO H SHENG X ZHAO Z LEI H LIU X 收藏  |  浏览/下载：5/0  |  提交时间：2019/12/13