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Harmonics are periodic distortions of voltage, latest, or energy sine waves. Harmonics in electricity distribution units are often caused by non-linear hundreds like switched manner dc power provides and adjustable pace motor drives.Giao di?n danh m?c nh?n ??nh ???c thi?t k? c?c k? b?t m?t Bên c?nh ?ó, trang World-wide-web c?ng ???c t?i ?u hóa t

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