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Helium(He)翻译

• Helium(He)什么意思、翻译、用法

  英语翻译时间：2023/3/2 0:11:00阅读：1689

  Helium(He)翻译网络氦英英释义Helium(He)n.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 gase