2005/06/05 | 双晶[Twin]
类别(℃〖化学〗) | 评论(0) | 阅读(34) | 发表于 12:21
A symmetrical intergrowth of two or more crystals of the same substance. Individuals in a twinned aggregate are related by a symmetry element that is absent in a single untwinned crystal.
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