density of passenger traffic [交] 旅客运输密度
·2,447,543篇论文数据，部分数据来源于NoteExpress
The larger the traffic volume on the specific circuit is, the higher the density of passenger traffic, freight transportation, the lower the average transportation cost is.
特定线路上的运输量越大，客运密度、货运密度越高，平均运输成本就越低。
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