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1. The new rheostatis designed to control the speed of themotor.
新电枢调节器旨在控制电机的速度。
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2. The rheostat was usedto adjust the voltage for the circuit.
电枢调节器被用来调整电路的电压。
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3. The engineers were tasked withdesigning a new rheostat for thefactory.
工程师们被指派为工厂设计一个新的电枢调节器。