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 absorption of haematomas was assessed quantitatively by daily measurement of the radioactivity and compared intraindividually.
血肿的吸收通过每日定量地测定放射活性进行比较。 - ( combining form) indicating radiation or radioactivity.
（化和形式）指示放射或放射能的。 - 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。 - 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。 - The ability of radiation to induce radioactivity in food is related to its energy.
辐照所引起的使食物具有放射性的能力是与辐照的能量有关的。 - The air survey is specially superior in the regional environmental radioactivity survey, which is recommended by IAEA.
在区域环境放射性测量中，航测具有特殊的优势，是IAEA推荐的手段。 - We have to learn to control radioactivity.
我们必须学会控制放射能。 - 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。 - 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。 - There is concern about the amount of radioactivity being released into the environment.
人们对释放进环境的辐射量表示不安。