The fuel supply system of 420 or 500 series Benz auto engine is electronic control mechanical injection system ,its idle is controlled by seperate idling ECU.是什么意思_The fuel supply system of 420 or 500 series Benz auto engine is electronic control mechanical injection system ,its idle is controlled by seperate idling ECU.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句