“draw-bar trailer”的概念、定义、翻译、参考文献-科学参考

单词	draw-bar trailer
释义	draw-bar trailer Encyclopedia 工学挂车释 draw-bar trailer牵引杆挂车至少有两根轴的挂车。具有一轴可转向，并通过角向移动的牵引杆与牵引货车连接，牵引杆可垂直移动，连接到车辆上不承受任何垂直力。
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