预防性检修
preventative maintenance
preventive maintenance
preventive maintenance(PM
plasma cleaningpreventative maintenance
PMpreventive maintenance
PLSpreventative maintenance
预防检修
preventive examine and repair
preventive reqair
预警、预防控制措施
Precaution
prevention and control measure
边防预警
early-warning for frontier defence
病因性预防作用
Causal prophylatic activity
城市消防预警信息系统
urban fire protection pre-warning system
传染病预警预测
Infectious diseases early alarming and prediction system
发动机预防性保养程序
engine preventive maintenance procedure
发动机运转预防性保养步骤
engine running preventive maintenance procedure
犯罪预防性景观设计
Analysis and research of ancient papers
公路预防性养护
Preventive maintenance for highway