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据欧洲铝协会报道,欧洲每辆汽车平均用铝量已达到85千克,并且按每年6％的速 度增长。为减少CO_2排放量,汽车制造商正在减轻汽车的自重。铝是一种理想的金属材
According to the European Aluminum Association, the average amount of aluminum used in each car in Europe has reached 85 kg and is growing at an annual rate of 6%. In order to reduce CO 2 emissions, automakers are reducing the car’s weight. Aluminum is an ideal metal material