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浏览/检索结果: 共3条，第1-3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 Synthesis of aza quat. carbon primary amine by using styrene acidic resin as catalyst, under normal pressure, mixing tertiary alcohol, urea, and styrene acidic resin for reaction, refluxing, and conducting filtering and recovery treatment. 专利 申请日期: 2013-01-01, 公开日期: 2013-02-13 作者:  MA E ZHOU X FENG L CHEN J CHEN Y JI 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/13 Direct-injection fuel oil injection method for gasoline engine, involves controlling oil spouting of multi-jet nozzle that is located on cylinder cover by using electric control element. 专利 申请日期: 2007-01-01, 公开日期: 2007-10-24 作者:  LONG W TIAN J FU L JI K FENG L LENG 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/27 PAEONIFLORIN COMPOUND HAVING INHIBITORY ACTIVITY ON ABNORMAL EXPRESSION OF CYCLOOXYGENASE-2, PREPARATION METHOD THEREFOR, AND USE THEREOF 专利 作者:  YE, Yang;  FENG, Linyin;  GE, Fan;  CAI, Xin;  TANG, Chunping 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/05