cavernous dolomite

• 孔状白云岩

cavernous dolomite的用法和样例：

例句

1. The dolomite of Upper Sinian Dengying Formation is favorable ore-source rock and useful ore-preserving country rock.
   上震旦统灯影组碎裂状白云岩是有利的矿源层及有利的赋矿围岩。