The device introduced can transform 12 V DC into 220 V/50 Hz AC by making use of sine pulse width modulating signals produced by the SG3525.是什么意思_The device introduced can transform 12 V DC into 220 V/50 Hz AC by making use of sine pulse width modulating signals produced by the SG3525.在线翻译_英语_读音_用法_例句