The Two Way Automatic Communication System (TWACS) is implemented by modulating the power voltage at preselected zero of the voltage waveform of the distribution network.是什么意思_The Two Way Automatic Communication System (TWACS) is implemented by modulating the power voltage at preselected zero of the voltage waveform of the distribution network.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句