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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

    • 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。
    • Radioactivity is a special quality of radium.
      放射性是镭的一种特性。
    • 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。
    • We have to learn to control radioactivity.
      我们必须学会控制放射能。
    • 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。
    • Exhibiting or caused by radioactivity.
      显示出放射能或者由放射能导致的。
    • 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。
    • 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。
    • 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。
    • ( combining form) indicating radiation or radioactivity.
      (化和形式)指示放射或放射能的。