Ch? nh?t: Kiên Giang, Lâm ??ng, Ti?n Giang K?t qu? XSMN ???c s?p x?p m?c ??nh theo l?ch m? th??ngHarmonics are periodic distortions of voltage, present-day, or power sine waves. Harmonics in electricity distribution methods tend to be due to non-linear hundreds such as switched mode dc energy materials and adjustable velocity motor drives.Các b�