It is an important method for scientific management of tracks to inspect track defects, direct track maintenance operation, and measure dynamic quality of tracks by maintenancecar.
利用轨道检查车检查轨道病害，指导线路维修作业，评价轨道动态质量，是实现轨道科学管理的重要方法。
2
Other than blowing up a tyre I hadn't done any carmaintenance.
除了给一个轮胎充气外，我没有做过任何汽车保养。
《柯林斯英汉双解大词典》
3
Careful maintenance can extend the life of your car.