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单词 atomic mass unit
释义 atomic mass unit
noun
: a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to 1/12 of the atomic mass of the most abundant carbon isotope, 6C12, which is about 1.66043 × 10-27 kilogram or in terms of equivalent energy to about 9.31478 × 108 electron volts — called also mass unit
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