quaternary ammonium compound

quaternary-ammonium-compound的词性：
n.（名词）

1. Any of a group of compounds in which a central nitrogen atom is joined to four organic radicals and one acid radical, used as antiseptics, solvents, and emulsifying agents.
基铵化合物：一种化合物，其中中心氮原子与四个有机原子因和一个酸基相连接，用作防腐剂、溶剂和乳化剂