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单词 ultramafic
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ultramafic


ul·tra·maf·ic

U0010950 (ŭl′trə-măf′ĭk)adj. Ultrabasic.

ultramafic

(ˌʌltrəˈmæfɪk) adj (Geological Science) geology (of igneous rock) composed of a very high percentage of magnesium and iron

ultramafic


ultramafic

[¦əl·trə′maf·ik] (petrology) Referring to igneous rock composed principally of mafic minerals, such as olivine and pyroxene.
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