pyrogenic rock
英
美
网络 火成岩; 岩浆岩
双语例句
- In the closed seam, the pyrogenic rock compressed and compacted the structure coal. There is a stress concentrated at the tip of the structure, which could provide the inner energy for the gas.
火成岩对煤层挤压揉皱形成构造煤，同时构造尖灭端应力集中，提供了足够的瓦斯热力学能。