towing hook meaning in Chinese

联结构
拖钩
拖曳钩

Towing hook electric release test and load test also shall be carried out
进行拖钩电动释放试验和拖钩的负荷试验。
Dragging force of towing hook
拖钩牵引力
Specification for towing hook for use between trailers of 5 - 35 tons gross weight and towing vehicle
总重5 - 35吨挂车和牵引车的牵引钩规范
Specification for towing hook for use between trailers of 5 - 14 tons gross weight and towing vehicle
总重5 - 14吨的挂车和牵引车的牵引钩规范