对客运专线的客运需求的掌握是客运专线运营的基础工作，也是目前铁路迫切思考和解决的问题。
So, mastery of PDL demand is a basic work of the operating, which is also the urgent problem that railway sector must think and solve.
并运用单纯形方法对各规划年度的公路网等级结构进行了优化，通过综合分析得出客运需求高于货运的结论。
The grade structure of a road network in annual planning is optimized with the simplex method. Conclusions are reached through synthetic analysis.
多种交路的行车组织方式在满足客运需求和方便乘客出行的同时，也对城轨交通系统的通过能力和车底运用产生不利的影响。
The multi-routing mode can satisfy the passenger demand and is more convenient for traveling; at the same time, it has adverse influence on the use of the carrying capacity and rolling-stock.
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