brake cylinder head

例句：

1. 1. The brake cylinder is responsible forslowing down the vehicle's speed.
   刹车缸负责减缓车辆的速度。
2. 2. The cylinder headis where the piston moves to andfrom the cylinder.
   气缸头是活塞进出气缸的地方。
3. 3. The cylinder body is made of steeland is attached to the engine block.
   气缸体由钢制成，并连接到发动机块上。