Study on the effect of gathering and scale economy;
从集聚效应和外部规模经济进行的研究;
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 simulation results prove that: when countries show differences in resources, comparative advantages and scale economy are the natural causes of international specialization;
实验结果表明:在两国存在资源禀赋差异的条件下,比较利益和规模经营是形成国际分工的自然原因;
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