noun 下载 🔗分享 可变电阻器,变阻器 An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider. Examples : "I used a rheostat to dim the lights in my room, turning the knob until the brightness was just right. " 我用一个可变电阻器(变阻器)来调暗房间里的灯光,转动旋钮直到亮度正好合适。 electronics device technology electric machine 与AI对话词汇游戏阅读练习