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随着电力和内燃牵引的广泛使用,要求制造新的、更加经济的车辆。新型车辆应能适应各种货物机械化装卸的要求及大吨位列车的高速运行。在这种情况下为了充分利用轨道的允许载荷,必须提高车辆的载重量,同时为了运送大宗的多品种的货物(矿石、粮谷、混凝土、石油产品集装箱、沥清、酸、碱和其它的化学产品等)并在机械化装卸和运输过程中保证货物的完整无损,须使各型车辆专门化。
With the widespread use of electricity and internal combustion traction, new and more economical vehicles are required. New vehicles should be able to adapt to the requirements of mechanized loading and unloading of various cargoes and high-speed operation of large-tonnage trains. In order to take full advantage of the allowable load on the track under such circumstances, it is necessary to increase the carrying capacity of the vehicle, and at the same time to transport bulk bulk cargoes (ores, grain, concrete, petroleum products containers, bitumen, acids, Chemical products, etc.) and to ensure the integrity of the goods during mechanization of loading and unloading and transportation, specialization should be made for all types of vehicles.