| 释义 |
变阻器biànzǔqì可以调节电阻大小的装置,接在电路中能调整电流的大小。一般的变阻器用电阻较大的导线(电阻线)和可以改变接触点以调节电阻线有效长度的装置构成。{rheostat; adjustable resistor used for controlling the current in a circuit, generally consisting of a wire (resistive conductor) with considerable resistance, and a device with adjustable junction points for regulating the effective length of the resistive conductor} |