Distribution and capacity of the traction substation facility shall satisfy the requirement of the velocity aim traffic volume marshalling and running interval of main line.
牵引变电站设施的分布与容量应满足干线的速度目标、交通量、编组以及运行间隔要求。
Freight volume distribution and traffic assignment are two key problems in transportation planning. However, the existing models have some defects.
运量分布与交通分配是交通规划中的两个关键问题，但现有模型在我国城市交通规划的实际应用中存在不少问题。
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