The paper introduces the composition,principle and dynamical performances of the closed loop VVVF system using magneto electric pulse tacho apparatus to constitute the slip frequency control.是什么意思_The paper introduces the composition,principle and dynamical performances of the closed loop VVVF system using magneto electric pulse tacho apparatus to constitute the slip frequency control.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句