inspection and preventive maintenance program
lubrication and preventive maintenance schedule
natural gas standby generator preventive maintenance recommendation
Prevention and maintenance
preventive maintenance inspection
preventive maintenance recommendation
engineering district；maintenance of way section；track division；track district；track maintenance division
policy of prevention in the first place and integrating prevention with control
3 level maintenance tset
active maintenance downtime
active maintenance time
active preventive maintenance time
Adaptive Maintenance
适应性养护
自适应维修
循序修正最佳化
自适应速度控制
适应维护