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单词 gram atom
释义

WordReference Random House Unabridged Dictionary of American English © 2024
gram at′om, [Chem.]
    the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element. Also called gram-a•tomic weight  (gramə tomik, -tom′-).USA pronunciation Cf. Avogadro's number.
    • 1895–1900

Collins Concise English Dictionary © HarperCollins Publishers::
gram atom, gram-atomic weight n
  1. an amount of an element equal to its atomic weight expressed in grams: now replaced by the mole
    See mole4
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