radioactivity
英 [ˌreɪdiəʊæk'tɪvəti]
美 [ˌreɪdioʊæk'tɪvəti]
n. 放射性; 放射(现象)
BNC.16448 / COCA.20084
柯林斯词典
- ADJ-GRADED 放射性的;有辐射的
Something that isradioactivecontains a substance that produces energy in the form of powerful and harmful rays.- The government has been storing radioactive waste at Fernald for 50 years.
政府在弗纳德存放放射性废料已达50年之久。
- The government has been storing radioactive waste at Fernald for 50 years.
英英释义
noun
- the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
双语例句
- The decrease in percentage difference of radioactivity over these two sites indicates the rate of thrombus dissolution.
两部位放射活性百分比差异的减少提示了血栓的分解率。 - So the concentration of radioactivity in the seawater would still be quite low.
因此海水中的放射性浓度仍将相当低。 - ( combining form) indicating radiation or radioactivity.
（化和形式）指示放射或放射能的。 - With radioactivity, if you give me a single atom of uranium, I can tell you it will eventually decay.
就放射性现象来说，你如果给我一个铀原子，我可以告诉你它最终会衰变。 - This conviction was based solely on the atomic nature of radioactivity.
我们的这种信念完全依赖于原子的放射性属性。 - This example illustrates the great sensitivity of the radioactivity method.
这个例子说明了放射性方法很灵敏。 - Radioactivity is a special quality of radium.
放射性是镭的一种特性。 - Potassium iodide can be used to counteract radioactivity.
碘化钾可以用于阻碍辐射损害。 - This paper presents basic situation and survey methods of environmental radioactivity in Mongolia and Romania.
本文介绍了蒙古和罗马尼亚两国环境放射性的基本态势，以及环境放射性调查方法等。 - Cancer is no longer an incurable disease nowadays, it can be remedied by using radioactivity.
如今癌症不再是不治之症了，它可以通过放射治疗。