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
- 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。 - Detects the presence of radio signals or radioactivity.
探测无线电信号或放射能的存在。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。