a底梁采用超高强度钢板冲压为槽型结构,其厚度为罩壳厚度的3-4倍,经测算底梁的刚性大于原防撞梁,能够提高车体承受碰撞的能力,减轻汽车的损坏程度,降低维修成本。 The bottom millstone uses the superelevation intensity steel plate ramming for the trough structure, its thickness for lagging thickness 3-4 time...