名词
中文翻译：场调节器
同义词：
['field controller', 'field regulator']
例句：
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1. The field rheostat was used to adjust the speed of the motor.
场调节器被用来调整电机的速度。
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2. The field rheostat was responsible for maintaining the proper voltage levels in the circuit.
场调节器负责维护电路中适当的电压水平。
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3. The field rheostat was used to control the flow of electricity through the circuit.
场调节器用于控制电流通过电路的流动。