People have to use the digital logic circuit "build" into a special computer numerical control machine tool real as a system, the hardware connecting numerical control, or not numerical control (NC).
人们不得不采用数字逻辑电路“搭”成一台机床专用计算机实作为数控系统，被成为硬件连接数控，简称未数控(NC)。
Introducing the principle, construction and technological parameters of machine tool changement. This paper calculates some design data such as electro-magnetic induction circuit and coil.
介绍机床改装原理、结构和技术参数，对电磁感应器磁路及电磁线圈参数进行了有关的计算。
This paper deal with the equations about maximum pressure on closed-circuit guide track in machine tool.
本文推导出了机床闭式导轨面上最大压强的计算公式，该公式适用于任何可能的压板间隙，具有通用性。
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