perforation
名词：
名词: perfora-tor
更多词形：
形容词: perforable | 名词: perfora-tor | 动词过去式: perforated | 动词过去分词: perforated | 动词现在分词: perforating | 动词第三人称单数: perforates |
单词例句：
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。
Perforation: Adequate numbers providers for air escape.
打孔:袋子需打适当数目的孔供出气。
The acute Perforation has developed.
发生急性穿孔。
The experimental results indicate that the ultimate load decreases with increase of perforation size.
根据不同开孔尺寸试件的试验结果可知，开孔构件的极限承载力随着开孔高度、宽度的增大而下降。
The group passed perioperative period uneventfully after treatment, except one died of stomach perforation in thoracic cavity.
结论高龄胸部肿瘤患者围手术期处理较为复杂，应该予以重视。
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。
Involvement of the small bowel by primary or metastic neoplasms may occasionally be followed by perforation.
原发性或转移性肿瘤累及小肠也偶可继发穿孔。
The relationship between the Helicobaeter pylori and perforation, blleding of peptic ulcer and pyloristenosis.
幽门螺杆菌与消化性溃疡穿孔、出血、幽门狭窄关系的研究。
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)。