Two reinforcement structures are arranged on longitudinal beams, and the two reinforcement structures are respectively connected with each door frame to form a loop structure;
所述的加强结构有两个，分别与车辆的门的框相连接，形成一个回路结构；
Two reinforcement structures are arranged on longitudinal beams, and the two reinforcement structures are respectively connected with each door frame to form a loop structure;
所述的加强结构有两个，分别与车辆的门的框相连接，形成一个回路结构；
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