perforation

• Thinking about traumatic perforation of tympanic membrane
  治疗鼓膜穿孔的疗效及愈合过程的超微结构的观察
• A separation of continuous paper forms , usually at the perforation
  通常在穿孔处对连续格式纸进行的分离。
• Experience of surgery in aged patients with perforation of peptic ulcer
  老年人消化性溃疡穿孔手术治疗体会
• Punching and stamping . codification for designating material perforations
  冲孔与冲压.材料凿孔标示的编码
• Forensic medical identification of traumatic tympanic membrane perforation
  外伤性鼓膜穿孔的法医学鉴定分析
• Horizontal middle line perforation dropped
  横中缝漏齿
• The diagnosis and treatment of the old ages ' perforation of upper digestive tract
  老年人上消化道穿孔的诊治
• Vertical middle line perforation dropped
  直中缝漏齿
• In children , large bowel perforation is rarely caused by fungus
  摘要孩童因为?菌造成大肠穿孔的例子非常少见。
• Influencing factors to productivity for high pressure water jet perforation
  高压水射流深穿透射孔产能影响因素