Double circuit, air brake, drum type.
双电路，空气制动，滚筒式。
Single drum type of low thermal efficiency and low production capacity.
单滚筒式的热效率低生产能力小。
In some cameras of this type the drum is rotated at high speed.
在此种类型的某些摄影机中，鼓轮是高速转动着的。
The other type of brake is the drum brake.
其他类型的刹车是鼓式制动器。
In the drum-and-shoe type, there is a wheel Brake cylinder with two pistons.
鼓式制动器制动鞋使用两个安装在一个固定底板上每个车轮。
In the drum-and-shoe type, there is a wheel Brake cylinder with two pistons.
鼓式制动器制动鞋使用两个安装在一个固定底板上每个车轮。
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