| 单词 | thousandth mass unit |
| 释义 | thousandth mass unit [`thau̇z·ǝnth `mas `yü·nǝt] PHYSICS A unit of energy equal to the energy equivalent of a mass of 10-3 atomic mass unit according to the Einstein mass- energy relation, that is, to the product of 10-3 atomic mass unit and the square of the speed of light; equal to approximately 1.49176 × 10-13 joule. |
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