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重型载重汽车投产前必须通过试验以确定样车能否满足设计要求。图1示出重型载重汽车从明确设计概念到决定投产的发展过程。重型车厂一般产量很小。如美国西海岸的彼得毕尔特厂1968年的产量为3200辆,美国国际收割机公司在西海岸的圣勒安得略厂1968年日产25辆。小产量重型车厂的重要零、部件一般由外厂供应。这些机件在发展中的设计、试验等也在它们的制造厂进行。因此,虽然重型车厂不对全部零件进行设计、试验,但是每一新设计
Heavy duty trucks must pass the test before commissioning to determine whether the prototype can meet the design requirements. Figure 1 shows the heavy truck from a clear design concept to decide the operation of the development process. Heavy-duty car factory output is generally small. For example, the Peterbilt plant on the west coast of the United States produced 3,200 in 1968 and the United States International Harvester Company produced 25 in 1968 at the Helena Ontario Plant on the west coast. Small-scale heavy truck depot important zero, parts generally supplied by the factory. The development of these parts in the design, testing, etc. are also carried out in their manufacturing plant. Therefore, although the heavy vehicle depot does not design or test all the components, each new design