stercoral perforation结肠粪性穿孔;粪性结肠穿孔
abraded perforation磨蚀的射孔眼
Mixed Perforation混合齿孔
Perforation Misplaced齿孔移位
Bald perforation秃齿
blocked perforation堵塞的炮眼
Short perforation短齿
undamaged perforation无污染射孔
gun perforation射孔;射孔完井
Neither stenosis nor perforation was encountered.
无狭窄、穿孔发生。
参考来源 - 套扎辅助内镜下黏膜切除术治疗Barrett食管的前瞻性研究The contradiction between the damping and bending stiffness make it difficult to determine the size of the perforation area. In this paper, the properties of cocured composite with embedded perforated viscoelastic layer are investigated.
弯曲刚度和阻尼性能之间的矛盾,使得阻尼层穿孔面积的大小难以确定。
In modern wars, all most of the perforation wound, and the normal-frequency ventilation can’t work well to the state of an illness, but the high-frequency ventilation can do it.
在现代战争中,伤员大部分都为枪弹伤(系贯穿伤),而对于这种伤病情况,普通的常频呼吸机不能够达到最佳的通气效果,而高频呼吸机却能够达到较好的通气治疗效果。
参考来源 - 急救高频喷射呼吸机的研究Because of its great current signification and importance in military field, the penetration and perforation of concrete slabs impacted by steel projectiles has been an ongoing topic of interest.
弹体对混凝土的侵彻、贯穿效应在军事领域具有重要的现实意义。
参考来源 - 混凝土材料在侵彻及爆炸加载下动态响应的数值模拟N-COUNT（可数名词） Perforations are small holes that are made in something, especially in paper. 小孔 [usu pl]
Tear off the form along the perforations and send it to Sales.
沿着打的孔撕下表格，寄给销售部。