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发展重载运输,大力提高列车牵引重量是加强既有铁路综合运输能力,解决当前运能与运量矛盾行之有效的措施之一。中国式的铁路重载运输就是在大力提高列车重量、积极增加行车密度、适当提高速度的技术政策下,大幅度地或成倍地提高列车重量的运输形式。在主要干线上,5000吨以上的货物列车称为重载列车。组合列车是重载列车的一种。
Developing heavy haul transport and greatly increasing tractive haulage of trains are one of the effective measures to strengthen the capacity of integrated rail transport and solve the contradiction between current capacity and traffic volume. Chinese-style railway heavy-haul transport is a form of transportation that can significantly or multiply the weight of trains under the technical policy of vigorously increasing train weight, increasing traffic density and appropriately increasing speed. On the main route, cargo trains above 5,000 tons are called heavy-haul trains. Combined train is a heavy-duty train.