It has a prismatic and splintery texture and is abundant in regionally metamorphosed (see metamorphism) rocks such as schists.

具有棱形和易碎裂结构，在区域性变质（metamorphism）非常丰富，如片。

By reducing the tangential representation set of small covers over prisms to a prime form,this article determines the classification of small covers over prisms up to equivariant cobordism.

本文通过将棱小覆盖切表示集约化到一种素形式,来确定其等变配边分类。