atomic mass unit

1. The radiation damage of ( 100) Si implanted at room temperature by As_2~+ andAs~+ at the same energy for atomic mass unit are compared.
   本文比较了室温下每原子质量单位能量相同的As2~+和As~+注入（100）Si所引入的辐射损伤。
2. Some mass quantities and their units in mass spectrometry are introduced, including mass and weight, relative atomic mass and relative molecular mass, mass of atom and mass of molecule, atomic mass unit, unified atomic mass constant and molar mass.
   介绍并辨析质谱学中与质量相关的量和单位的含义：质量和重量，相对原子质量和相对分子质量，原子质量和分子质量，原子质量单位、原子质量常量和摩尔质量。

noun

1. unit of mass for expressing masses of atoms or molecules