Therefore, Numeric control machine tool that is key set becomes the key matter in the process of manufacturing and using. Given that, maintenance is on long term basis while repairing work is not.
因之，作为关键设备的数控机床就成日常操作和使用中的核心问题，而就此而言，维护是长期的，维修和排故是偶然的和不确定的。
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