Also has the mountain the surface, how you regardless of do enlarge it partial, it so rough is all uneven and so on.

还有高山的表面，您无论怎样放大其局部，它都如此粗糙不平等等。

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In power system, it can excite partial parallel resonance or serial resonance, enlarge the harmonic wave, trigger relay protection system in error and disturb electric power energy metering equipment.

在电力系统，它可以刺激局部并联谐振或串联谐振，放大谐波，引发继电保护系统误差和扰乱电力能源计量设备。

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