TheL-Series Air/Fuel Ratio Control provides precise air/fuel ratio controlfor engines using three-way catalytic converters to reduce exhaustemissions.是什么意思_TheL-Series Air/Fuel Ratio Control provides precise air/fuel ratio controlfor engines using three-way catalytic converters to reduce exhaustemissions.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句