noun🔗Share变阻器，可变电阻器。 An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider."The science student used rheostats to carefully control the brightness of the light bulb in her experiment. "这位理科学生用变阻器来精确控制实验中灯泡的亮度。electronicsdeviceelectrictechnologyChat with AIVocabulary GamePractice Reading
