查询词典 acid group

The polycondensation of the benzoguanamine and pyromellitic Dianhydride was carried out under microwave irradiation, and the resulted polyamic acid was grafted with TDI-para position substitution aniline derivatives. Thus graft polymers with different electronic effect of the end group in side chain were obtained.

将微波辐射合成的苯代三聚氰胺-均苯四酸二酐体系的PAA与TDI-对位取代苯胺衍生物反应，通过改变TDI－对位取代苯胺衍生物的对位取代基来合成具有不同电子效应的侧链端基的接枝聚合物。

The single crystal complex [Co22] (Hqina=quinaldinic acid) was synthesized, which belongs to monoclinic system with space group P2(1)/C.

合成了配合物[Co22]单晶，其中，qina为喹哪啶酸根，DMSO为二甲基亚砜。

A single crystal complex [Ni2(H2O)2]2DMSO(Hqina=quinaldinic acid, DMSO=dimethyl sulfoxide) was synthesized at room temperature by the solvent substitution method, which belongs to monoclinic system with space group C2/m.

在常温下，通过溶剂置换法制备了[Ni2(H2O)2]2DMSO单晶，其中qina为喹哪啶酸根，DMSO为二甲亚砜。

Removement of isopropylidene group to restore the hydroxyl groups was performed by adding trifluoroacetic acid.

用1H NMR和IR等手段表征了聚合物结构，并讨论了脱保护时间对聚合物结构的影响。

Won a long day for the sun to provide silyl acid products Co., Ltd., the Group is the world's leading industrial and specialty gas distributors, has been for many major manufacturers of the electronics industry to provide services.

赢创长期以来一直为大阳日酸株式会社提供甲硅烷产品，该集团是全球领先的工业及特种气体分销商，多年来一直为许多电子行业的主要厂商提供服务。

In RD group, subretinal injection with 10 mg/ml hyaluronic acid sodium was performed on the left eyes of the rats to set up RD model, and the left eyes and retinal tissue were collected 1/2 day, 1 day, 2, 4, 8, 16 and 32 days after RD; there were 11 rats in each subgroup.

方法88只Wistar大鼠分为2组：正常对照组11只鼠；RD组77只鼠，左眼视网膜下注射10mg/ml透明质酸钠建立RD模型，分别在RD后1/2、1、2、4、8、16、32d收集大鼠左眼球及视网膜组织，RD后各时间组每组各11只大鼠。

In RD group, subretinal injection with 10 mg/ml hyaluronic acid sodium was performed on the left eyes of the rats t o set up RD model, and the left eyes and retinal tissue were collected 1/2 day, 1 day, 2, 4, 8, 1 6 and 32 days after RD; there were 11 rats in each subgroup.

88只Wistar大鼠分为2组：正常对照组11只鼠；RD组77只鼠，左眼视网膜下注射1 0 mg/ml透明质酸钠建立RD 模型，分别在RD后1/2、1、2、4、8、16、32 d收集大鼠左眼球及视网膜组织，RD后各时间组每组各11只大鼠。

It is reviewed that sulfamic acid can be utilized as a green catalyst in many important organic reactions such as esterification and transesterification,group protection,imino-Diels-Alder,rearrangement,substitution and condensation.

综述了近年来氨基磺酸作为一种绿色催化剂在有机合成中的应用，主要包括酯化与酯交换、基团保护、氮杂Diels-Alder、重排、取代及缩合等反应。

This invention discloses super molecule plant layer 2-benzene group benzimidazole-5 sulfonic acid and its preparation method and application.

本发明提供了一种超分子插层2-苯基苯并咪唑-5-磺酸及其制备方法与用途。

With the combination of highly automated facilities and operational systems, mature technology and world-class manufacturing concept, Sutor Group has completed the integration of product value chain, including Acid Pickled line, Cold Rolled line, HDG line and PPGI line to make value added in each stage.

公司引进世界先进的热镀锌生产线和彩色涂层钢板生产线的最新技术，将成熟的工艺设备有机的结合在一起，组成国际先进水平的连续生产线，具有工艺技术领先、系统运行可靠、自动化程度高的特点，形成年产热镀锌钢板70万吨，彩涂钢板20万吨，冷轧25万吨、酸洗50万吨的规模。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。