Therefore, the research on collision characteristics of motor vehicles and trailers rear underrun protection for improving the safety performance of automobile collision is of great significance.
因此，研究车辆后下部防护装置的碰撞特性，对于提高汽车碰撞安全性具有重要的意义。
Therefore, the research on collision characteristics of motor vehicles and trailers rear underrun protection for improving the safety performance of automobile collision is of great significance.
因此，研究车辆后下部防护装置的碰撞特性，对于提高汽车碰撞安全性具有重要的意义。
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