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有关非公路载重汽车电力和机械两种驱动方式的比较已有大量文章报道。关于这方面的争论是从1963年美国通用电气公司(GE)同尤尼特。里格设备制造公司联合进行批量生产Unit Rig M85型电动轮汽车时开始的。这种载重能力85短吨(1短吨=0.9072t)的自卸汽车是当时最大的载重汽车。从那时起,至今已(其中包括Haulpak、Unit Rig、VMF-Americas和wised牌号汽车)制造出6200多台85～240短吨采用GE电力驱动的自卸汽车。
There have been a large number of articles on the comparison of two kinds of driving modes of power and machinery on off-highway trucks. The controversy in this regard has been with General Electric (GE) in 1963 and Unite. Rieger Equipment Manufacturing Company started with the mass production of the Unit Rig M85 electric wheel car. This type of dump truck with a capacity of 85 short tons (1 short ton = 0.9072 ton) was the largest truck of that time. Since then, more than 6,200 Dump Trucks powered by GE have been manufactured to date (including Haulpak, Unit Rig, VMF-Americas and wised brands) to date.