= atomic mass unit n. at atomic mass, n. compounds.
| 单词 | θ79347 |
| 释义 | the world > matter > physics > atomic physics > [noun] > atomic mass > unit of (2) mass unit1942 = atomic mass unit n. at atomic mass, n. compounds. atomic mass unit1954 a unit used for expressing atomic masses, formerly equal to 1/16 of the average mass of an atom of oxygen, or of the precise mass of an atom of the… |
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