fissuren.裂缝；裂沟；分裂v.裂开；分裂fissure fracture坼裂骨折,破裂骨折,裂纹骨折fissure of Monro[医] 丘脑下部沟, 下丘脑沟fissures closure裂隙闭合fissure eruption裂缝喷发fissure features裂纹特征fissures of coal煤体裂隙fissure treatment裂缝处理fissure reservoir裂缝油气藏fissure volcanoes裂隙火山fissure in a rock岩石上的裂缝