Because of non linearity of output voltage and current of the inverter, accurate measurement of inverter efficiency has always been a difficult problem around the world and demands prompt solutions.

由于逆变器输出的电流、电压的非线性，精确测量其效率一直是国内外亟待解决的难题。

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Because of non linearity of output voltage and current of the inverter, accurate measurement of inverter efficiency has always been a difficult problem around the world and demands prompt solutions.

由于逆变器输出的电流、电压的非线性，精确测量其效率一直是国内外亟待解决的难题。

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