radioactivity
radioactivities 是 radioactivity 的复数形式，页面展示原形释义。
英 [ˌreɪ.di.əʊ.ækˈtɪv.ə.ti]
美
[ˌreɪ.di.oʊ.ækˈtɪv.ə.t̬i]
- n. 放射性；[核] 放射能力；[核] 放射现象
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词族 · radioactivity
词形变化
派生词
英语词源
- radioactivity (n.)
- 1899, from French radioactivité, coined 1898 by the Curies; see radioactive.
权威例句
- 1. the process of decontaminating areas exposed to radioactivity
- 清除受放射污染地区有害物质的过程
- 2. The soil contains 30 times the acceptable level of radioactivity.
- 这片土壤受到了高于标准30倍的辐射.
- 3. The site was found to be contaminated by radioactivity.
- 发现此地受放射线污染.
- 4. They argued that only a negligible rise in atmosphere radioactivity resulted from the test.
- 他们辩解说,由这次试验所造成的大气层放射活动的增加是微不足道的.
- 5. The level of radioactivity in the soil was found to be above recommended limits.
- 土壤的辐射水平被发现超过规定的限度.