Study on the Consecutive Boring Principle of the Open Type Full Face Rock Tunnel Boring Machine 敞开式全断面岩石掘进机连续掘进原理的研究
Research on Open Type Measuring System for Ultra-Precision Machine Tools 超精密机床开放式测量系统的研究
This paper introduced the conception and characteristics of the open type CNC system, and the necessity of open architecture CNC system was presented. emphatically explained application of machine tool on PC-based hardware and software of CNC system. 本文介绍了数控系统实现开放的必要性以及开放式CNC系统的含义、特点,着重阐述了基于PC总线的开放式CNC系统硬件和软件体系结构在机床上的应用。
A new process for the front treatment of open width about thin cloth of cotton is put forward, which use for desizing and scouring and bleaching by conveyer type scouring and bleaching machine. 介绍一种纯棉薄织物的平幅前处理新工艺,该工艺采用了常压履带式练漂机退浆和练漂。
Close reduction was done in 20 cases and open reduction was in 3 cases. The fractures were fixated by 3 parallel hollow screws in the form of isosceles triangle under monitoring of type C arm X-ray machine. 闭合复位20例,切开复位3例,在C形臂X线机监视下,将3枚空心螺丝钉呈等腰三角形平行打入。