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Harmonics are periodic distortions of voltage, current, or electrical power sine waves. Harmonics in electric power distribution systems are frequently due to non-linear masses for instance switched method dc electricity provides and adjustable velocity motor drives. Giải phụ được tính cho những tờ vé số khớp 5 số cuối cùng https://masonl900tpi4.qodsblog.com/profile

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