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
- Potassium iodide can be used to counteract radioactivity.
碘化钾可以用于阻碍辐射损害。 - 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。 - Some of that radioactivity could carry in the atmosphere to the west coast of the United States.
某些核辐射可能通过空气传播到美国西海岸。 - 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。 - 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。 - Equipment used to treat diseases with x-rays or radioactivity.
利用x光或放射能治疗疾病的装备。 - 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。 - 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。 - Instead they found little more than background levels of radioactivity.
然而，他们只发现了和背景放射性差不多的放射性水平。