名词
中文翻译：速度调节器
同义词：
['speed governor', 'throttle controller', 'throttle regulator']
例句：
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1. The speedmuller was used to control the engine's RPMs.
调速器用于控制发动机的转速。
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2. The engineer adjusted the speedmuller to optimize fuel efficiency.
工程师调整了调速器以优化燃油效率。
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3.During acceleration, the car's speedmuller reduces the engine's load.
加速时，汽车的调速器减轻了发动机的负荷。