在导管分子中，存在着梯状穿孔板、网状穿孔板、混合型穿孔板和单穿孔板；
The form of the perforation plates in the typical vessels are various, divide into several subtypes:scalariform perforation plates, reticulate perforation plates.
从穿孔机调整、工具形状等方面分析了二辊锥型穿孔机产生轧卡的原因，并提出了相应的预防措施。
This paper analyzes the reasons leading to rolled stock jamming in duo cone type piercing mill on piercing mill adjustment and tool shape etc. and puts forward corresponding preventive measures.
慢性中耳炎的危险型可出现鼓膜松弛部的穿孔和鼓膜边缘性穿孔。
The dangerous type chronic otitis media occurs with pars flaccida and marginal perforations.
连中学生都把苹果II型机搬回家了，大学里还在使用穿孔卡片。
So while high school kids had Apple IIs at home, the universities were still using punch CARDS.
运转原理：膜板阀是一种手轮型阀门，它采用两个由非穿孔横膈膜隔开的阀杆。这些横膈膜防止了沿着阀杆的泄漏。
Operating Principle: The diaphragm valve is a handwheel-operated valve, utilizing a two-piece stem separated by non perforated diaphragms. These diaphragms prevent leakage along the valve stem .
这种新辊型对低塑性钢穿孔质量的改善和实现大前进角强化穿孔过程都有很大意义。
This new roll shape is very effective for improving pierced quality of low plastic steel and intensifying piercing process with larger cross angle.
将所需要的花型转换成一系列穿孔的纹板或穿孔的塑料片环。每次开口引入一根纬纱时，需要一块纹板。
The pattern desired is transferred to a series of perforated CARDS or a roll; one card is required for each shedding and placing of a filling pick.
目的评价儿童角膜穿孔伤修补，外伤性白内障摘出和后房型人工晶状体植入联合手术的疗效。
Objective To evaluated the efficacy of combined surgery of corneal perforation repair, traumatic cataract extraction and posterior chamber intraocular lens implantation in children.
方法：应用B型超声对27例胃肠损伤和消化道溃疡穿孔病例进行急诊检查。
Methods: B type ultrasonography was used to examine 27 cases with gastrointestinal injury and perforation in an emergency.
一圈儿8毫米厚的白色穿孔钢板从商场走廊逐渐延伸至店铺内部，创造出一个柔软、纯净的弧型空间。
A circle of 8mm thick white perforated steel plate extends from the mall corridor to the inner store; this helps to create a soft and pure curved space.
慢性中耳炎的危险型可出现鼓膜松弛部的穿孔和鼓膜边缘性穿孔。
The dangerous type chronic otitis media occurs with pars flaccid and marginal perforations.
目的研究电穿孔及离子导入时电场方向对分子型药物咖啡因经皮渗透的影响。
Objective to study the effect of electric field direction on the percutaneous penetration of the non-ionic drug caffeine mediated by skin electroporation and iontophoresis.
同时既能提供生产大口径、厚壁管所需的圆钢锭，又不需要对轧管穿孔机的辊型进行修改。
Simultaneously, round steel ingots which are used to produce pipes with large diameters and thick walls are provided without modifying roll shapes of rolling pipe piercers.
目的研究电穿孔技术对小分子离子型药物经皮渗透的影响。
OBJECTIVE To study the effects of electroporation on the permeation of small molecular ion drug through skin in vitro.
本发明为改进型无缝油井钢管穿孔辊联轴器。
The invention relates to an improved seamless oil well steel tube penetrating roll coupler.
本发明为改进型无缝油井钢管穿孔辊联轴器。
The invention relates to an improved seamless oil well steel tube penetrating roll coupler.
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