酸基

Around 83 % benzene ring of polystyrene was sulfonated according to the analysis of infrared spectra.

用红外光谱仪分析得到，SSPS树脂中约83%的苯环接上了磺酸基。

A compound derived from ammonia and containing the bivalent NH group combined with a bivalent nonacid group.

亚胺源自氨的一种化合物，含有与一个二价非酸基结合的氨基

In addition, there is a free non-coordinated carboxyl group (CH_2COO~-) in the complex anion ~(3-).

其中的 COO~-是一个未参与本位的可用于偈的自由羧酸基。

Building block of proteins; containing an amino group and a carboxylic acid group.

组成蛋白质的基本单位，含有一个氨基和一个羧酸基。

The results indicated that they were of better catalytic and reusable performance than the traditional method.

结果表明，磺酸基功能化的离子液体都具有较好的催化活性和重复使用性能。

The main differences for chromophore α84 are in ring A and in the conformation of the propionate side-chain of ring B and ring C, and the conformation differences for chromophore β84 are in ring A and ring D.

色素α84构象区别主要表现为环A上的区别和环B及环C的丙酸基侧链上的区别。色素β84的构象区别主要表现在环A和环D上的区别。

Students should grasp the classification of the nitration reactions and its industrial application, the main nitration reagents and the nitration method, the classification of the sulfonation reactions, the function of sulfo group and its in the industrial application, sulfonating agents and its industrial application, the separation method for the sulfonated compounds, the widespread applicationof diazonium and the coupled reactions and its in the industry specially employed in the dyes and the pigments synthesis

掌握硝化反应的分类及其在工业上的应用。掌握主要的硝化试剂和硝化方法。掌握磺化反应得分类、磺酸基的作用及其在工业上的应用。掌握磺化剂其在工业上的应用。了解磺化物得分离方法。掌握重氮化及偶合反应及其在工业上特别是在染料和颜料合成中的广泛应用。

Its electroosmotic flow property is investigated in a variety of nonaqueous media (methanol, formamide and N, N-dimethylformamide and mixtures of methanol and acetonitrile).

在相同条件下与非涂层毛细管上的分离做了比较。4。利用溶胶凝胶法和化学键合法制备了非高聚物有机磺酸基涂层毛细管。

In this step also the acid moiety was methylated to give the ester.

在这一步，也是酸基元是甲基给予酯。

In the sulfonation process,sulfonate groups were introduced on the phenyl groups of PS.

在磺化过程中，磺酸基被引入到聚苯乙烯的苯基上。

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。