将各节车厢按编号从大到小挂到车头上,其中在入轨与出轨之间有k条缓冲铁轨,将通过缓冲铁轨完成本次列车重排(Each car will be numbered from large to small hanging to the front, in which there is a track between the track and derailed K buffer rail, the train will be completed through the buffer rail rearra