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    helium

    helium - 365bet中国官方网站 definition and meaning for word helium

    Definition
    (noun) 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)
    Synonyms : atomic number 2 , he

  • Word used in video below:
    text: inertia in gases like helium at
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