联系我们联系我们
Gneiss is a medium- to coarse-grained rock that characteristically exhibits a banded appearance due to the physical segregation of the minerals of which it is comprised. Yet, despite its layered appearance, gneiss does not readily cleave along the planes of its bands.
对不起,此内容在您的国家不适用。
您即将被转换到我们的本地网站。