n. 挂钩；[铁路] 牵引钩
... drawhole 拉拔模孔；缩孔 drawhook 挂钩 draw-in bolt 拉紧螺栓 ...
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... drainagecoil排吝圈 drawhook牵引钩 drawbar拉杆 ...
挂钩；[铁路]牵引钩
towing eye / hanger