The frequency changer in the electric control system adopts the products of Delta B series (vector control mechanical load) with 460 VAC voltages.是什么意思_The frequency changer in the electric control system adopts the products of Delta B series (vector control mechanical load) with 460 VAC voltages.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句