Therefore, the quality of automotive power systems directly affect the normal operation of the car, so the power supply system for the inspection and maintenance of the fault is necessary.
因此，汽车电源系统的好坏直接影响汽车的正常运行，所以对于电源系统的检查及其故障维护是十分必要的。
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 maintenance car.
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。
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