释义 |
radioactivity美 [.reɪdioʊæk'tɪvəti] 英 [.reɪdiəʊæk'tɪvəti] - n.放射性;放射(现象)
- 网络放射现象;放射性活度;放射能
n. radiation,particle emission,energy,fallout n. | 1. the radioactive nature of a substance such as uranium or plutonium 2. the high-energy particles emitted by radioactive substances 3. a form of energy that is produced by a radioactive substance and is harmful in large amounts 4. the ability that some substances have to produce energy in the form of radiation 1. the radioactive nature of a substance such as uranium or plutonium 2. the high-energy particles emitted by radioactive substances 3. a form of energy that is produced by a radioactive substance and is harmful in large amounts 4. the ability that some substances have to produce energy in the form of radiation |
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