HLV ??c Th?ng kh?ng ??nh tham v?ng vô ??ch Cúp Qu?c gia và ch? ra ?T Vi?t Nam c?n m?t g??ng m?t này trong ??i hình c?a Viettel.Harmonics are periodic distortions of voltage, latest, or power sine waves. Harmonics in energy distribution programs will often be a result of non-linear masses for example switched method dc electricity provides and