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首頁英語詞典heliumhelium英英釋意

helium

英 ['hi?l??m] 美['hil??m]
  • n. [化學] 氦（符號為He，2號元素）

英英釋意

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)