- 双语例句
1、
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.
辞典例句
2、
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.
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