... mass of atom (of a nuclide X) [核素X的]原子质量 mass of molecule 分子质量 mass optical memory 大容量光存储器 ...
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The kind and number of atoms in a molecule determine a molecular mass.
分子中原子的种类和数量决定分子质量。
Molecular weight: Mass of a molecule of a substance, Based on 12 as the atomic weight of carbon-12.
分子量：物质的分子质量，依据的事实是1莫耳的碳- 12的质量是12克。
Compared with other methods, mass spectrometry is more accurate because the quality of molecule is measured directly.
由于直接检测分子的质量，质谱技术同其他方法相比更加准确。
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