钩连接 meaning in Chinese

hooking

Coupler connection contour for locomotives and cars
机车车辆自动车钩连接轮廓
Use a metal or carbon fiber pushrod with a plastic ball joint or plastic clevis at each end
使用金属棒或碳纤棒两端以球头或塑胶u形钩连接。
Agricultural vehicles - mechanical connections between towed and towing vehicles - part 2 : specifications for clevis coupling 40
农用车辆.拖挂车和牵引车辆之间的机械连接.第2部分: 40 v型钩连接器规范