从工业化大生产出现至今，设备维修大致经历了三种方式事后维修、预防维修、状态维修或预知维修。事后维修是zui早的维修方式，因当时工业生产规模不很大，设备简单，技术水平低，且设备利用率和维修费用不是突出问题，人们对设备故障缺乏认识，设备管理意识较淡薄，故只在设备坏了之后才进行修理

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