求翻译：请输入您需要翻摘要：精密机床主传动变速系统是机械制造和加工的关键工程。本文主要探讨了精密机床主传动变速系统的设计问题。主要从主传动系和精密机床进给系进行设计，以期对机械工程提供有益参考。是什么意思？

Enter your need to turn Abstract: Precision machine tool main drive transmission system is the machinery manufacturing and processing engineering. This paper mainly discusses the design of precision machine tool main drive transmission system. Design the main feed from the main transmission lines an

Please enter your required summary: precision machine tools main drive transmission system is mechanical, manufacturing and processing of the key project. This article explores the precision machine tools main drive transmission system design problems. mainly from the main train and precision machin

Please input you to need to turn the abstract: The precision machine tool master drive speed change system is the machine manufacture and the processing essential project.This article has mainly discussed the precision machine tool master drive speed change system design question.Mainly is and the p

Please enter your required summary: precision machine tool main drive variable speed system is critical for machinery manufacturing and processing projects. This article focused on the design of precision machine tools speed-change system of main transmission problems. Mainly from the main transmiss

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