Rn Radon

英 美
  • radon n.氡
  • Rn abbr.[化]元素氡的符号(=radon)RN.abbr.无线电导航(RadioNavigation)abbr.注册护士(RegisteredNurse)abbr.皇家海军(RoyalNavy)
    1. A radon progeny continuous monitor was developed.
      本工作研制氡子体连续测量仪。
    2. Radon is the daughter of radium.
      氡是镭的子体。