slider swing-bar滑块摆杆
Rotor-swing-bar mechanism转动摆杆机构
slider-swing-bar dyad滑块摆杆
swing bar council吊杆
SWING AWAY SPRAY BAR摇摆喷射杆
swing bar buffer mechanism摆杆式缓冲机构
swing block four bar linkage摆杆四杆链系
slider and swing guide-bar mechanism摆动导杆滑块机构
Bar swing木棒千秋