It is proved by test results of load performance that the actual control effective ness of the EGR control system is optimum under this fuel advance angle.是什么意思_It is proved by test results of load performance that the actual control effective ness of the EGR control system is optimum under this fuel advance angle.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句