| 词汇 | atomic mass unit |
| 释义 | atomic mass unit noun [ C ] chemistry specialized uk/əˌtɒm.ɪk ˈmæs ˌjuː.nɪt/ us/əˌtɑː.mɪk ˈmæs ˌjuː.nɪt/ (abbreviation u) 原子质量单位（等于碳－12原子质量的十二分之一） a unit used for measuring atomic mass, equal to one twelfth of the mass of an atom of carbon in its commonest form, carbon-12 |
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