Yeomans FTa610 and 620-WG Simplex and Duplex Controllers are designed for constant speed motor control in waste water pumping applications.是什么意思_Yeomans FTa610 and 620-WG Simplex and Duplex Controllers are designed for constant speed motor control in waste water pumping applications.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句