具有七个顶点的多面体是稀少的.Polyhedra with seven vertices are rare.在所有共享一对伪顶点的二个分量间建立相邻关系.Establish the adjacency relation among all pairs of components which share a pair of pseudovertices.不要轻视上升到光辉顶点的梯阶.Do not despise the step whic...
Essentially fractures can cut most types of carbonate fabric.实质上裂缝可割切大多数类型的碳酸盐组织.Rock faces commonly show a stockwork of intersecting quartz and carbonate veins.岩石的外表呈现交织的石英及碳酸盐细脉组成的网格构造.The calcium carbonate content of ...