常見(jiàn)例句雙語(yǔ)例句Of or relating to rock so formed; pyrogenic.火成的由熔化的巖石凝固形成的。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.火成巖對(duì)煤層擠壓揉皺形成構(gòu)造煤，同時(shí)構(gòu)造尖滅端應(yīng)力集中，提供了足夠的瓦斯熱力學(xué)能。 返回 pyrogenic rock