工程机械维修业发展的动向

1．维修理念的变革 （1）事后维修思想 20 世纪初期，工程机械维修一般都是在发生故障以后才进行的，即事后维修。它的最大优点是充分地利用了零部件或系统部件的寿命，但事后维修是非计划性维修，浪费

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