从实践与应用的角度定位数控化改造。
Rebuilding machine tools by numerical control is oriented in view of practice and applications.
点位数控系统基本上是一个定位系统，其主要目的是将刀具或工件从一个编程点位移至另一个点位。
Point-to-point NC system is basically a positioning system. Its primary purpose is to move a tool or workpiece from one programmed point to another.
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