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单词 radium emanation
释义

Definition of radium emanation in English:

radium emanation

noun
  • archaic term for radon
    Example sentencesExamples
    • By 1900, Friedrich Dorn discovered the isotope radon - 222 and called it radium emanation (Em).
    • In 1921 Margaret Uhlig suggested that radium emanation, later known as Rn, may be the cause of the lung cancers.

Definition of radium emanation in US English:

radium emanation

noun
  • archaic term for radon
    Example sentencesExamples
    • By 1900, Friedrich Dorn discovered the isotope radon - 222 and called it radium emanation (Em).
    • In 1921 Margaret Uhlig suggested that radium emanation, later known as Rn, may be the cause of the lung cancers.
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更新时间：2026/4/14 3:33:15