基团的英文：
base group ;ionogen

Azide:a chemical compound that contains the group N.
叠氮化物:一种化合物,包含基团N。

Amino acids are differentiated according to the R group attached to the a-carbon (the one closest to the COO) H group).
氨基酸通过连结在α-碳原子的R基团(离-C(X)H基团最近的一个)来区别。

The betaine will collapse to the alkene only when these two functions are eclipsed
只有当这两个基团移至重迭位置时内铵盐才能裂解为烯烃。

It will be helpful to examine first the behavior of the NH and COOH groups of free glycine as an example.
这对于以甘氨酸为例首次检验-NH2和-COOH基团的特性是有帮助的。

The R groups determine the catalytic properties of enzyme proteins.
R基团还决定酶蛋白的催化性。

Hb Memphis: substitutes one uncharged polar residue for another of similar size on the surface.
表面上的一个不带电的极性基团被另一个相似不带电的极性基团取代。

Adding other groups at the amine stage may be advisable
在胺阶段引入其他基团可能是有好处的。

Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts
大多数连于芳核能被直接取代的基团仅限于重氮盐。

Any of various alcohols containing two hydroxyl groups.
双羟基醇含有两个羟基团的醇

Containing three replaceable atoms or radicals.
三羟基的包含有三个可取代的原子或基团的

the base of the standard
旗瓣基部

The player on second base was spiked by the runner on base.
在第二垒的运动员被跑垒人的钉鞋踩伤了。

Is it theresilient base mount type?
这就是弹性底座安装式 ？

grouping of data
资料归类

They are a group of wakes.
他们是一群守夜的人。

This group could be subdivided into two small groups.
这个组可以分成两个小组。