虽然效率可以提高，当正弦波通过非线形载荷，正弦波失真出现，然后谐波电流通过负载。
Though the efficiency can be enhanced when sine wave passes through non-linear loads, the sine wave distortion appears, and then harmonic current passes through loads.
虽然效率可以提高，当正弦波通过非线形载荷，正弦波失真出现，然后谐波电流通过负载。
Though the efficiency can be enhanced when sine wave passes through non-linear loads, the sine wave distortion appears, and then harmonic current passes through loads.
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