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- Keywords bicyclic ortho ester;expanding monomer;expansion polymerization; 双环原酸酯;膨胀单体;膨胀聚合反应;
- Keywords bicyclic ortho ester;transesterification;expansion monomer;expansion polymerization; 双环原酸酯;酯交换反映;膨胀单体;膨胀聚合反应;
- The results revealed that the components with bicyclic ortho ester had expansibility in the ring opening polymerization by initiation of cationic compounds. 对膨胀聚合反应研究发现,带有膨胀基团双环原酸酯的材料在阳离子引发剂存在下开环时具有膨胀特性。
- A new kind of bicyclic ortho ester,4-( hydroxymethyl)-2.6,7- trioxabicyclo[2.2.2] octane was synthesized by the reaction between trimthyl orthoformate and pentaerythritol without catalyst. 由原甲酸三乙酯与季戊四醇为原料制备了一种双环原酸酯4-羟甲基-2,6,7-三氧杂二环(2,2,2)烷,并提供了一条简单可行的合成途径。
- A new kind of bicyclic ortho ester,4-(hydroxymethyl)-2.6,7-trioxabicyclo[2.2.2]octane was synthesized by the reaction between trimthyl orthoformate and pentaerythritol without catalyst. 由原甲酸三乙酯与季戊四醇为原料制备了一种双环原酸酯4-羟甲基-2,6,7-三氧杂二环(2,2,2)辛烷,并提供了一条简单可行的合成途径。
- Some novel bioelastomers, especially degradable bioelastomer, including network polyester, polyhydroxyalkanoate, poly (ether ester), polypetide, poly (ortho ester) and hydrogel, were reviewed. 摘要综述了网络型聚酯、聚羟基烷基酸酯、聚醚酯、聚肽、聚原酸酯和水凝胶等新型生物弹性体的研究进展。
- Some novel bioelastomers,especially degradable bioelastomer,including network polyester,polyhydroxyalkanoate,poly(ether ester),poly-petide,poly(ortho ester)and hydrogel,were reviewed. 综述了网络型聚酯、聚羟基烷基酸酯、聚醚酯、聚肽、聚原酸酯和水凝胶等新型生物弹性体的研究进展。
- Keywords Bicyclic ortho-ester;Ortho-ester;Synthesis; 双环原酸酯;原酸酯;合成;
- Keywords Bicyclic nucleosides;Tricyclic nucleosides;Radical cyclization;1;3-Dipolar cycloaddition;Ring-closing metathesis; 双环核苷;三环核苷;自由基环合;1;3-偶极环加成;烯烃复分解;
- Keywords bicyclist;injuries;helmet;strategy; 自行车;伤害;头盔;对策;
- ortho ester 原酸酯
- Keywords bicyclist;riding action;strength;flexibility;training; 自行车;骑行;力量;柔韧;锻炼;
- Keywords: GPRS; GPS; GIS; Protocol; Design?? 关键词：通用分组无线业务；全球定位系统；地理信息系统；协议；设计??
- Make bulk changes to keywords, ads, and ad groups. 批量更改关键字、广告和广告组。
- Some keywords in SQL are also reserved words. SQL中的一些关键字也是保留字。
- Are reserved keywords in Office projects. 是Office项目中的保留关键字。
- Click the Keywords button at the top of the window. 点按窗口顶部的“关键词”按钮。
- Mention your keywords inside the meta tags. 梅塔内提你主题词标识。
- Reserved keywords in the Remarks section. 之后的保留关键字。
- KEYWORD： bicycle;mode choice;unobservable factors；attitudes；behavior 关键词：自行车；方式选择；不可测因素；态度；行为
