main brake contact

例句：

1. 1.The main brake contact is responsible for the vehicle's braking system.
   主刹车接触点负责车辆的制动系统。
2. 2.Maintaining proper brake contact is crucial for safe driving.
   保持适当的刹车接触对安全驾驶至关重要。
3. 3.During the emergency stop, the main brake contact should be pressed firmly to avoid skidding.
   紧急停车时，应用力按下主刹车接触点以防止打滑。