制动蹄对制动鼓所产生的摩擦力迫使制动鼓和车轮减速或停车。
The brake shoes apply friction to the brake drum, forcing it and wheel to slow or stop.
当你踩下脚制动时，摩擦片就会紧紧地压在车轮制动鼓上，使车轮停止转动。
When you press on the foot brake, friction bands push hard against the wheel drums and stop the wheels from turning.
选择鼓式制动器摩擦片时，动摩擦系数的选择既要满足制动性能，同时也要满足稳定性。
When selecting brake shoe, the dynamic friction coefficient must fulfill the request of both brake capability and stability.
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