常見例句雙語例句The critical problem for preventive maintenance is how to confirm the maintenance time.預(yù)防性養(yǎng)護(hù)的關(guān)鍵問題是養(yǎng)護(hù)時(shí)機(jī)的確定。Using the concept of delay time, a preventive maintenance(PM) model suitable to practice is proposed.利用時(shí)間延遲概念建立了預(yù)防維修模型。Many areas in China have studied on the right preventive maintenance time and maintenance measures in recent years.近年來，我國多個(gè)地區(qū)開展了預(yù)防性養(yǎng)護(hù)時(shí)機(jī)和養(yǎng)護(hù)措施的研究。 返回 preventive maintenance time