| 单词 | quaternary ammonium compound |
| 释义 | quaternary ammonium compound in British Englishnoun a type of ionic compound that can be regarded as derived from ammonium compounds by replacing the hydrogen atoms with organic groups quaternary ammonium compound in American English any of a class of compounds in which the four hydrogen atoms of the ammonium radical are replaced by other groups, generally organic radicals: used as solvents, disinfectants, etc. |
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