长石橄榄岩

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(136) / 评论(0) 分类 万物简史
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