rock arm

• 摇臂

rock arm的用法和样例：

例句

1. The rocker arm pivots on a shaft through its center.
   摇臂以通过它的中心为轴而旋转。
2. Remove the cotter pin and nut from the drag link at the pitman arm.
   从转向拉杆上拆下转向摇臂处的开口销和螺母。