Railway transport has both distance and scale economy, so the railway companies always regard large scale and long distance freight transport as their objective markets.
铁路运输具有距离与规模两方面的经济性，铁路部门也一直把大批量中长途货物运输作为其目标市场。
The transport service of railway is a basic trade of the national economy, and a main artery of the national economy, have special function in the whole national economy.
铁路运输业是国民经济的基础性行业，是国民经济的大动脉，在整个国民经济中有着特殊的作用。
The transport service of railway is a basic trade of the national economy, and a main artery of the national economy, have special function in the whole national economy.
铁路运输业是国民经济的基础性行业，是国民经济的大动脉，在整个国民经济中有着特殊的作用。
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