Physics. = radioactivity, n.1 1; the disintegration rate of a radioactive substance. Also (as a count noun): a distinct type or source of…
| 单词 | θ79501 |
| 释义 | the world > matter > physics > atomic nucleus > radioactivity > [noun] > radiation emitted (4) activity1898 Physics. = radioactivity, n.1 1; the disintegration rate of a radioactive substance. Also (as a count noun): a distinct type or source of… radioactivity1899 The property or condition of being radioactive. Also: the radiation emitted by a radioactive material; such material itself in a dispersed form… radiation1958 Energy emitted or transmitted in the form of rays or waves (esp. electromagnetic waves), or subatomic particles; a distinct kind of such emission… Subcategories:— directed flow of (1) |
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