翻译
  • atomic number 2

    翻译

    原子数2

    以上结果来自机器翻译。

  • 英英释义

    Noun

    • 1. a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
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