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四、超精密机床关键部件和关键技术的发展起精密机床技术的发展提高，取决于它的关键部件和关键技术的发展和提高。下面简单介绍超精密机床关键部件和关键技术近年来的发展情况。1．超精密机床的总体布局结构起精密车床一般用于加工反射镜等盘形零件，不用后顶尖。其总体布局结
Fourth, the development of key components and key technologies of ultra-precision machine tools The development and improvement of precision machine tool technology depends on the development and improvement of its key components and key technologies. The following brief introduction of the key components of ultra-precision machine tools and key technologies in recent years the development. 1. The overall layout of the ultra-precision machine tool structure Precision lathe generally used for processing mirrors and other disc-shaped parts, without the top post. The overall layout of the knot