短語詞組短語stercoral perforation 結(jié)腸糞性穿孔;糞性結(jié)腸穿孔abraded perforation 磨蝕的射孔眼Mixed Perforation 混郃齒孔Perforation Misplaced 齒孔移位Bald perforation 禿齒blocked perforation 堵塞的砲眼Short perforation 短齒undamaged perforation 無汙染射孔gun perforation 射孔;射孔完井perforation plate 穿孔板；勻漿板 返回 perforation