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атомная масса
The mass number of one atom of an isotope (e. G. , carbon-14). It is the sum of the number of protons and neutrons in the nucleus of one atom. See atomic number.
- 词性： noun
- 行业/领域： 人类学
- 类别 体质人类学
- Company: Palomar College
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- AliyaS
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