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单词 radioactive decay
释义 radioactive decay
[¦rād·ē·ō`ak·tiv di`kā]
NUCLEAR PHYSICS
The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. Also known as decay; nuclear spontaneous reaction; radioactive disintegration; radioactive transformation; radioactivity.
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