求翻译：阻抗百分比应相等允许相差不超过±10%；是什么意思？

Impedance allows the percentage should be equal to the difference of not more than ± 10%;

Impedance 100% more or less than the equivalent allowed more than ± 10 %;

The transformer copper loss refers to the loss which at the beginning of the secondary wire DC resistance creates, therefore only needs the transformer on to add on the nominal current then, the concrete operation is the secondary coil direct pipe nipple, adds the voltage on a side, amounts to until

Difference of not more than ± 10% impedance equal to the percentage should be allowed;

Difference of not more than ± 10% impedance equal to the percentage should be allowed;