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铁路运输工作中旅客和货物的位置移动,生产出客货运换算吨公里,是通过机车牵引的客货列车在铁路线上的运行来完成的。铁路线路是行车的基础,铁路运输的现代化也应以铁路线路的现代化为基础。 中国铁路线路是在旧中国铁路技术落后、设备简陋的基础上,逐步加强和发展的。建国当时的二万余公里铁路,钢轨类型多达百种以
The movement of passengers and goods in railway transportation has resulted in the production of passenger and freight transport in tons of kilometers, which is accomplished through the operation of the freight trains towed on the railway line by locomotives. The railway line is the basis of driving and the modernization of railway transportation should also be based on the modernization of railway lines. China’s railway lines are gradually strengthened and developed on the basis of backward technology and poor equipment of the old Chinese railway. At the time of the founding of the PRC, there were more than 20,000 kilometers of railroads with hundreds of rail types