eleven gi? tr??c Nh?n ??nh, soi kèo Slovenia vs B? ?ào Nha: B?a ti?c bàn th?ngHarmonics are periodic distortions of voltage, current, or energy sine waves. Harmonics in ability distribution systems in many cases are attributable to non-linear hundreds for instance switched mode dc power provides and adjustable velocity motor drives.Th?ng kê lot