现代F1赛车的变速箱已经高度自动化了，车手只需要轻轻拨动方向盘上的小杆即可切换档位。
The gearboxes of modern Formula One cars are now highly automated with drivers selecting gears via paddles fitted behind the steering wheel.
拆下筒式挺杆和切换挺杆。
由切换该 导杆及导糟的卡掣配合位置，该托架及支撑杆可选择形成垂钓、伸展及折 收状态。
The bracket and the supporting rod can selectively form a fishing state, a stretching state and a folding state by switching the clamping and matching position of the guide rod and the guide grooves.
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