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helium

英 ['hiːlɪəm] 美['hilɪəm]
  • n. [化学] 氦(符号为He,2号元素)

英英释意


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)