Study on Mechanics Character of Perforation Fiber Board;
穿孔纤维板力学特性研究
The application of pedicled buccal fat pad graft for repairing perforation after palatorrhaphy.;
颊脂垫瓣在腭裂术后穿孔修补术中的临床应用
Laparoscopic repair of acute perforation for gastroduodenal ulcer;
腹腔镜胃十二指肠溃疡修补术治疗急性胃十二指肠溃疡穿孔
Experiment on Piercing of Shell for Large-sized Stainless Steel Tube;
大直径不锈钢管坯的穿孔试验
With a view to establishing the mechanism of center crack during two cross roll piercing, the distribution and development of deformation and stress in tube rounds were studied through the use of FE code MARC/Autoforge.
为了分析二辊斜轧穿孔时圆管坯中心金属的断裂机制 ,确立穿孔变形的工艺实质 ,用MARC/ Autoforge软件研究了圆管坯斜轧时的应力、应变场及其发展。
Used each superior equipment and both solved the key of large-sized stainless steel cold-drawn seamless tube-large-sized stainless tube blank and hot-piercing by Taiyuan I&S Co.
太原钢铁集团公司和成都无缝钢管公司双方利用各自装备优势,通过合作解决了生产大口径不锈钢冷拔无缝钢管的关键——大型不锈钢管坯和热穿孔。
The Burch empirical damage model and Schonberg-Williamsen empirical hole size model are firstly reviewed in this paper.
穿孔孔径是研究弹丸超高速撞击下航天器舱壁撞击损伤的重要参数之一。
paper tape puncher
纸带穿孔器纸带凿孔机
identifying code
验证码 -穿孔带的
A line of punch positions parallel to the shorter edges of a punch card.
平行于穿孔卡短边的一行穿孔位置。
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。
tape reperforator
带式自动纸带穿孔机
reeves electronic analog computer
穿孔电子模拟计算机
hole-conductor current access device
穿孔导体电流存取器件
directing punched spooled output
指向穿孔假脱机输出
ROTR (Receive-Only Typing Reperforator)
收报专用打字穿孔机
CO^2 laser perforator
二氧化碳激光穿孔机
current system punch output device
现行系统穿孔输出设备
rotary rolling mill
蘑菇形轧辊的穿孔机
cloth puncture strength tester
织物穿孔强力试验仪
circular perforated air diffuser
环形穿孔空气扩散器
This prevents bowel perforation.
这样可以防止肠道穿孔。
prick holes in paper with a pin
用大头针在纸上穿孔.
This board bores easily.
这块木板易於穿孔。
