音标:[.peri'dәutait] ;
n. 橄榄岩
n. a dark coarse-grained igneous rock consisting principally of olivine
词型变化:名词复数形式 : peridotites

peridotite的用法和样例:

例句

用作名词(n.)
  1. The magnesite originated from the peridotite by weathering.菱镁矿是由橄榄岩风化形成的。
  2. This may be up to 50km thick and comprises ultrabasic peridotite.其厚度可达50公里并由超基性的橄榄岩所组成。

So all that can be said is that at some slightly indeterminate point as we head toward the center of Earth we leave the asthenosphere and plunge into pure mantle. 因此,我们只能说,在前往地球中心的过程中,我们会在某个不大确

发表于:2019-02-25 / 阅读(158) / 评论(0) 分类 万物简史
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a bub
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Amphicarpaea
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astronaut system
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