?ây là gi?i ??u th? thao ?i?n t? th? hai v?i t? cách là s? ki?n tranh huy ch??ng trong m?t cu?c thi ?a môn th? thao ???c ?y ban Olympic Qu?c t? ch?p thu?n. Tham kh?o[s?a Harmonics are periodic distortions of voltage, present, or electrical power sine waves. Harmonics in power distribution programs will often be attributable to non-linear hundr