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Harmonics are periodic distortions of voltage, current, or power sine waves. Harmonics in power distribution programs are often due to non-linear masses such as switched mode dc electric power materials and adjustable pace motor drives... Trong quá trình nháºn định, các chuyên gia của chúng tôi sẽ so sánh tÆ°Æ¡ng quan sức mạnh cá