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Harmonics are periodic distortions of voltage, latest, or electric power sine waves. Harmonics in electricity distribution techniques in many cases are due to non-linear loads which include switched mode dc power materials and adjustable pace motor drives. Chúng tôi kết hợp kết quả xổ số từ nhiều kỳ khác nhau, https://wernert135mll6.blogthisbiz.com/profile

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