Railway carmen/women inspect, troubleshoot, maintain and repair structural and mechanical components of railway freight, passenger and urban transit rail cars.

铁路车辆检修工/男/女检查，排除故障，维护和修理铁路货运，客运和城市轨道交通车的结构及机械元件。

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Railway and rail transit are similar concepts without clear boundary.

铁路和轨道交通是两个相近的概念，它们之间边界是模糊的。

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This paper postulates the importance of track maintenance in urban rail transit by describing the characteristics of railway lines, the track structure damage by the motion of trains, etc.

从城轨交通线路的主要特征、列车运行时对轨道结构破坏等方面，说明轨道维修工作的必要性。

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