Heavy traffic overloaded the trunk lines.
繁忙的交通让主干道超负荷运行。
It puts forward a proposal concerning the practical matching plan for passengenger and freight trains on the four major trunk lines. Taking maximum traffic capacity as the judging criterion.
同时，提出了京广、京沪、京哈、陇海四大干线客货列车具体匹配方案及线路客货输运能力最大作为剖别条件的建议。
Based on the technical conditions of the four major trunk lines, this article demonstrates the rational match between hauled weight, operating speed and traffic density.
本文根据四大干线的技术条件，论证了提速客货列车的牵引质量，运行速度，行车密度间的合理匹配。
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