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o-

英['əʊ] 美['əʊ]
  • [医]正,邻(化学)

详细释义

名词 o:
  1. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust

  2. the 15th letter of the Roman alphabet

  3. the blood group whose red cells carry neither the A nor B antigens

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