1)knuckle pin(King pin),(转向节)主销2)steering knuckle kingpin,转向节主销3)knuckle kingpin,转向节主销4)front axle spindle kingpin,前桥转向节主销5)kingpin area,(转向节)主销，中心立轴6)trunnion socket kingpin boss,转动轴座(转向节)主销孔凸台7)transition to the author's point of view,转8)turn,转9)c.o.,转10)revolution,转，旋转，转数，回转