短语词组短语stub axle shaft 转向节轴steering stub axle 转向节短轴live stub axle 驱动短轴stub axle steering 短轴转向机构bogie stub axle 平衡轴planet stub axle 行星轮短轴stub axle spindle 转向节上的轮毂轴axle stub end 轴联杆端 返回 stub axle