T??ng lai c?a HLV Troussier v?n ???c ??m b?o sau chu?i tr?n th?t v?ng cùng ?T Vi?t Nam.Harmonics are periodic distortions of voltage, present, or electrical power sine waves. Harmonics in energy distribution techniques are often because of non-linear loads including switched method dc electricity supplies and adjustable velocity motor drives.Pháp