Chassis of dump semi - trailer is beam - passing structure and longitudinal beam adopts flat type or goose - neck type.

自卸半挂车车架均为穿梁 式 布局,纵梁采用平直式或鹅颈式.

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In the front collision of the car, the function of the longitudinal beam is very obvious.

在汽车的正面碰撞中,前纵梁的作用尤为明显, 其设计的好坏直接影响汽车的碰撞性能.

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