The length of railways in operation is an important indicator to show the development of the intrastructure for the railway transport,and also the essential data to calculate volume of passenger freight transport,traffic density and utilization efficienc
The length of railways in operation is an important indicator to show the development of the intrastructure for the railway transport,and also the essential data to calculate volume of passenger freight transport,traffic density and utilization efficienc
铁路营业里程是反映铁路运输业基础设施发展水平的重要指标，也是计算客货周转量、运输密度和机车车辆运用效率等指标的基础资料。