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分析数控机床误差产生的原因，论述提高数控机床精度的方法并进行了比较，针对目前数控机床精度强化存在的问题，提出了建设性的意见。
Analyze the reason of NC machine error, discuss the method to improve the precision of CNC machine tool and make a comparison. According to the existing problems of CNC machine tool, we put forward constructive suggestions.