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有线广播遍布在农村各个角落,这些广播都是通过改变串联电阻的阻值来改变音量的。将市售的遥控器同有线广播结合起来,就可实现遥控操作。
Cable broadcasts are found in every corner of the country and these broadcasts change volume by changing the resistance of the series resistors. Combining a commercially available remote control with a cable radio enables remote control operation.