Compared the VRT of perforating incompetence with that of competence ( P < 0.01 ).

As a main part of perforating charge, liner greatly effects the charge's performance.

药型罩作为石油射孔弹的关键部件, 其参数变化从很大程度上影响着射孔弹的射孔性能.

Objective To evaluate the correlative factors of blindness among patients with perforating corneal injury.

目的分析影响角膜穿孔伤致盲的有关因素.

Compound technique of perforating can effectively control the perforating direction and the fracturing expansion.

复合射孔技术能有效地控制射孔方向和压裂缝的扩展.

Objective To evaluate the diagnostic methods and treatment of gastric ulcer perforating with toxics tubular necrosis.

目的探讨胃溃疡穿孔合并中毒性肾小管坏死的诊断方法与治疗方案.

The utility model relates to a perforating bullet case blank precision cold-extrusion die.

一种射孔弹弹壳毛坯精密冷挤压模具.

This perforating fluid system is solid-free, high temperature resistant, stable, compatible, and not polluting.

该射孔液体系具有无固相 、 抗高温、密度可调 、 稳定性强 、 配伍性好 、 对环境无污染等优点.

The vital importance of the early recognition of perforating appendix is unmistakable.

能够早期辨明阑尾正在穿孔是极端重要的.

Before the perforating, friendly operation system is easy for operator, change-over exchange only manual adjustments.

在冲孔生产之前, 简易的作业系统普通的操作人员也能轻而易举的变换工作尺寸.

Results show that the acoustic system of micro perforation plate can effectively reduce discharge noise.

试验表明,微穿孔板吸声结构可有效地降低排气噪声.

The relationships among perforation diameter , density, phase and casing strength are clarified.

明确了射孔直径 、 度及相位等与套管强度的关系.

It is known that ear drum perforation resulting from burns resists closure.

摘要我们都知道,经过烧烫伤而穿孔的鼓膜,不易愈合.

Major complications for intestinal bleeding, intestinal perforation.

主要并发症为肠出血 、 肠穿孔.

Results Success rate of operation reached 100 percents, no uterus perforation or other complications happened.

结果118例困难宫腔手术,成功率100%, 未出现子宫穿孔及其它并发症.

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.

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.

Tear off the form along the perforations and send it to Sales...

沿着纸孔撕下表格，寄给销售部。

Methods A total of 76 patients with ulcer perforation underwent laparoscopic repair peptic ulcer perforation.

方法采用腹腔镜下缝合修补溃疡穿孔76例.

the perforations in a sheet of stamps

一版邮票上的齿孔

The result shows that the directional perforation formslong and flat fractures easier than the spiral perforation.

研究结果对疏松砂岩储层压裂充填防砂设计具有较大的指导意义.

Excessive pressure can lead to perforation of the stomach wall.

过大的压力会导致胃壁穿孔。