The sampling frequency of PMU is constant because of the synchronization of its phasor measuring.As system frequency changes, the error of measuring phasor is avoidless.是什么意思_The sampling frequency of PMU is constant because of the synchronization of its phasor measuring.As system frequency changes, the error of measuring phasor is avoidless.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句