原子数 yuánzǐshù atomic number Definitions Defs Origin Strokes Stroke Words Sentences Sents 原子数 原子數 yuánzǐshù atomic number the number of protons in the nucleus of an atom atomicity the number of atoms in a molecule
原子数 原子數 yuánzǐshù atomic number the number of protons in the nucleus of an atom atomicity the number of atoms in a molecule
