QQ客服 官方微博 反馈留言

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 发表日期：2018    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 Low-rigidity high-precision flat mirror grinding device, has porous ceramic vacuum chuck connected with vacuum pump, profilometer for measuring surface profile of low-rigidity mirror, and computer for reading measuring data of profilometer. 专利 申请日期: 2018-01-01, 公开日期: 2018-06-15 作者:  ZHOU P WANG Z YAN Y KANG R GUO D 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/02 Two-step salting-out extraction separation of 1,3-propanediol, involves dissolving soluble acidic inorganic salts in 1,3-propanediol fermentation broth, mixing hydrophobic organic solvent, oscillating, separating and extracting salt phase. 专利 申请日期: 2018-01-01, 公开日期: 2018-05-11 作者:  XIU Z LI Z YAN L SUN Y MU Y 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/02 Plasma jet generating device for both bare electrodes and dielectric barrier, has needle electrode sleeved on insulating sleeve, nozzle electrode formed as frustum shaped structure, where cold plasma jet is ejected from insulating sleeve. 专利 申请日期: 2018-01-01, 公开日期: 2018-03-02 作者:  LIU X LIU S LIU J WANG G WANG Z YAN 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/02 Method for online monitoring manufacturing overlapping rate of additive of laser e.g. semiconductor laser, involves position characteristic in unit to obtain overlapping value, where actual overlapping rate is obtained based on value. 专利 申请日期: 2018-01-01, 公开日期: 2018-02-13 作者:  LIU W TANG Z YAN Z LIU X ZHANG N ZH 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/02 Preparing 9,9-bis(4-hydroxyphenyl)-fluorene involves subjecting phenol and 9-fluorenone as raw material to condensation reaction with proton acidic functional ionic liquid as catalyst, which comprises anion and cation. 专利 申请日期: 2018-01-01, 公开日期: 2018-02-16 作者:  YU L GAO Z LUO S YAN L SHEN M 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/02