Entrusted sprocket, supporting wheels, wheel and rail links and so on, in the long running process, there will be a certain degree of wear and tear.
杂谈托链轮、支重轮、驱动轮及轨链节等，在长时间的运转过程中，会出现一定程度的磨损。
2
By means of the finite element theory, the inherent frequencies and vibration characteristics for existing rail line under different supporting conditions are analyzed.
运用有限元理论，分析了既有线路在不同支承条件下的固有频率和固有振动特性。
3
The characteristic of the temperature stress in the jointless switch lies in supporting additional temperature stress on the stock rail, the stress and the displacement presents the complex nature.