...测技术，提出设备维修时机预测的方法，从而预测设备从当前时刻到需要进行预防维修还有多长时间(time to preventive maintenance,TTPM)。TTPM 预测可以方便管理者制定预防性维修计划，进行备件存储策略决策。
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The preventive maintenance during the normal service period of the corroded chemical structural is to ensure the structure fulfill its designed service function in the given service time.
在正常使用过程中化工结构的预防性维修，主要目的是保证结构在预定时间内能完成其设计使用功能。
The critical problem for preventive maintenance is how to confirm the maintenance time.
预防性养护的关键问题是养护时机的确定。
Preventive equipment maintenance is to maintain equipment periodically according to a period and a conventional time interval and is a normal measure for equipment maintenance and management.
预防性设备维护是按周期、约定时间间隔对设备定期进行维护，是设备维护管理常用的手段之一。
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