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
- Radioactivity is the energy given off by rays from a few unstable elements such as uranium and thorium.
放射性是某些不稳定元素如铀和钍的射线放射出来的能量。 - Exhibiting or caused by radioactivity.
显示出放射能或者由放射能导致的。 - Detects the presence of radio signals or radioactivity.
探测无线电信号或放射能的存在。 - 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。 - We have to learn to control radioactivity.
我们必须学会控制放射能。 - 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。 - A metal called uranium gave off a kind of radiation, which Marie Curie later called radioactivity.
一种叫铀的金属发出一种射线，后来玛丽·居里把这种现象称为放射性。 - Radioactivity is a special quality of radium.
放射性是镭的一种特性。 - ( combining form) indicating radiation or radioactivity.
（化和形式）指示放射或放射能的。