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[今日口语] She is in a quandary about which university to choose.

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drum brake

鼓式制动器，鼓形制动器

Drum brakes are prone to a reduction in the braking effect, known as 'fate', caused by overheating of the linings and the drum
鼓式制动器易于因衬片过热而减少制动效用，这种现象叫“失效”。收藏
"In the drum-and-shoe type, there is a wheel Brake cylinder with two pistons."
在蹄一鼓式制动器中,有一个带有两个活塞的制动轮缸。收藏

名词解释：

hydraulic brake in which friction is applied to the inside of a spinning drum by the brake shoe

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