Two new ways of measuring the fuel consumption by on-board system are presented: electronic fuel injection(EFI) method and Air/fuel ratio(AFR) method.是什么意思_Two new ways of measuring the fuel consumption by on-board system are presented: electronic fuel injection(EFI) method and Air/fuel ratio(AFR) method.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句