radioactivity

1. ADJ-GRADED 放射性的;有辐射的
   Something that is radioactive contains a substance that produces energy in the form of powerful and harmful rays.
   1. 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。

1. 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。
2. 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。
3. ( combining form) indicating radiation or radioactivity.
   （化和形式）指示放射或放射能的。
4. Detects the presence of radio signals or radioactivity.
   探测无线电信号或放射能的存在。
5. Radioactivity provides an extremely sensitive method of analysis since disintegration of individual nuclei are monitored.
   因此放射现象可以监视每一个核的裂变，因此放射现象提供了一个极灵敏的分析方法。
6. 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。
7. 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。
8. 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。
9. Radioactivity is the ejection of particles or radiation from the nucleus.
   放射性是原子从核中射出粒子或辐射的现象。
10. Conclusion It was succeed keys to treat and nurse of esophagitis of radioactivity.
    结论放射性食管炎的治疗和护理，是放疗成败的关键。
11. Some rare metals have radioactivity.
    某些稀有金属具有放射性。
12. 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。
13. Exhibiting or caused by radioactivity.
    显示出放射能或者由放射能导致的。
14. 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。
15. 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。
16. 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。
17. 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。
18. 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。
19. 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。
20. Instruments that can detect minute amounts of radiation for measuring doses of ionizing radiation ( X-rays or radioactivity).
    能检测极微量辐射的仪器测量致电离辐射量的仪器。
21. 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。
22. Radioactivity is a special quality of radium.
    放射性是镭的一种特性。
23. 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。
24. We have to learn to control radioactivity.
    我们必须学会控制放射能。
25. 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。
26. Here, therefore, we have a true radioactivity which is made evident by the emission of positive electrons.
    我们因此获得了一种通过排斥正电子表现出来的真正的放射现象。
27. People had no idea of radioactivity before Curie discovered redium.
    直到居里夫人发现镭后，人们才了解放射性。
28. 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。
29. Potassium iodide can be used to counteract radioactivity.
    碘化钾可以用于阻碍辐射损害。

noun

1. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

   Synonym:    radiation