您要查找的是不是：
- A perforation,as in a punched card or paper tape. 在穿孔卡片或纸带上穿孔的一种动作。
- A perforation, as in a punched card or paper tape. 在穿孔卡片或纸带上穿孔的一种动作。
- An ornament inserted into a perforation in the lip. 唇饰穿在唇上的孔里的一种饰物
- This prevents bowel perforation. 这样可以防止肠道穿孔。
- The acute Perforation has developed. 发生急性穿孔。
- A mark or a perforation indicating canceling. 取消记号表示取削的标记或孔洞
- The perforation in tectum is clear. 覆盖层不连续,有小穿孔。
- The perfor mance indexes thereof are tested. 检测了该醇酸树脂的各项性能。
- Mesh sizes 16 and 32 are perforation cartridges. 网孔规格尺寸16和32是穿孔筒。
- No bleeding, perforation or septicemia occurred. 未发生出血、穿孔、败血症。
- 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。
- No water is entering through the deeper perforation. 更深处的射孔则没有水进入。
- 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。
- Excessive pressure can lead to perforation of the stomach wall. 过大的压力会导致胃壁穿孔。
- Perforation: Adequate numbers providers for air escape. 打孔:袋子需打适当数目的孔供出气。
- 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。
- Many things perfor (effectively) but not (efficiently). 许多事情表现得有效但缺乏效率。
- We should think about how to promote our perfor mance first. 我们应该首先考虑如何提升我们的业绩，（而不是薪水)。
- Test report is invalid without a seal on the perforation. 报告复制件不加盖本中心检验专用章无效。
- The reason is that the edge of a burn perforation has decreased blood supply. 主要是因穿孔边缘有厉害的缺血所致。
