原子质量 yuánzǐzhìliàng atomic mass Definitions Defs Origin Strokes Stroke Words Sentences Sents 原子质量 原子質量 yuánzǐzhìliàng atomic mass the mass of an atom of a chemical element expressed in atomic mass units
原子质量 原子質量 yuánzǐzhìliàng atomic mass the mass of an atom of a chemical element expressed in atomic mass units
