radioactivity

英 [ˌreɪdiəʊæk'tɪvəti]

美 [ˌreɪdioʊæk'tɪvəti]

n.  放射性; 放射(现象)

复数：radioactivities　

CET4CET6TEM4TEM8化学

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.
  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。

英英释义

noun

• the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
  Synonym:radiation

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。
• Radioactivity is a special quality of radium.
  放射性是镭的一种特性。
• 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。
• 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。
• 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。
• 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。
• 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。
• Some rare metals have radioactivity.
  某些稀有金属具有放射性。
• Exhibiting or caused by radioactivity.
  显示出放射能或者由放射能导致的。
• 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。