noun 下载 🔗分享 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. Examples : "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。 electronics device electric technology 与AI对话词汇游戏阅读练习