adj.[化]二(原子)价的

Of or containing bivalent nickel, Ni2+. 含二价镍的有或含有二价镍Ni2＋

A bivalent hydrocarbon radical,CH2-,a component of unsaturated hydrocarbons. 甲叉，亚甲一种双价碳氢基，CH2－，不饱合碳氢化合物的一个组成部分

A bivalent organic radical,C6H4,derived from benzene by removal of two hydrogen atoms. 亚苯基一种二价的有机基因，C6H4，通过去掉两个氢原子，从苯中衍生。

Bivalent Describing any pair of homologous chromosomes when they pair up during MEIOSIS. 二价染色体：在减数分裂中配对时的任意一对同源染色体。

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（NH）