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mafic ['mæfɪk]

adj. 铁镁质的;

例句:

  • Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
    黑云母一般是镁铁质及超镁铁质岩石中的次要成分.
  • Late Precambrian mafic dyke swarms are extensively developed in the central North China Craton.
    华北克拉通中部广泛发育晚前寒武纪镁铁质岩墙群.