轻量化:国外汽车的自身重量与去年相比减少了20％-26％。未来10年,轿车自重将比现在减轻20％。汽车减重方法主要是尽量减少零件数量和大量采用轻质合金及非金属材料,如新车身骨架零件量将由400个减到75个。用铝制造汽车具有质量轻、强度高、成型加工节省工时和设备以及减少污染等优点。 Lightweight: The weight of foreign cars is reduced by 20%-26% compared to last year. In the next 10 years, the self-weight of the car will be reduced by 20% compared with the present. The method of car weight loss is mainly to reduce the number of parts and use a lot of lightweight alloys and non-metallic materials, such as the new body frame parts will be reduced from 400 to 75. The use of aluminum to manufacture automobiles has the advantages of light weight, high strength, reduced man-hours and equipment for molding, and reduced pollution.