drag bar的用法和樣例：
例句
- A tow lug and crossbolt are installed for attaching a tow bar to the nose gear.
牽引環和橫向螺栓安裝在前起落架上用來連接牽引桿。 - Remove the cotter pin and nut from the drag link at the pitman arm.
從轉向拉杆上拆下轉向搖臂處的開口銷和螺母。 - We found electrical burn marks on the roll bar and the car's undercarriage.
我們在車的車盤和下拉杆上都發現了有電灼的痕迹。
