Powertrain selecting and matching for better fuel economy and better performance is a very important topic for design of heavy duty trucks.

为了得到更好的燃料经济性和整车性能，对动力系统进行选择和匹配是重型汽车整车设计中的重要课题。

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For 5 years in future, the total demand in global automotive market shall not increase markedly, but may increase in demand of heavy duty trucks.

未来5年，全球汽车总体需求量不会有大的增长，但是重型汽车的需求量却可能增加。

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Compared with 380db clutch, 395db clutch has advantages of higher reserve ratio and torque capacity, and thereby can meet the requirement of heavy duty trucks better.

与380db相比，395db离合器具有后备系数大、传递扭矩大等优点，更能满足重型车的需要。

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Cummins also cited a drain in North American demand for heavy duty trucks and power generators.

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Heavy duty trucks are generally defined as those with a gross vehicle weight of 15 tons or more.

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By comparison, approximately 200, 000 to 400, 000 heavy duty trucks are sold in the United States every year, depending upon economic conditions.

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