معنی second-order efficiency, معنی سثرخئی-خقیثق ثببهرهثئرغ, معنی second-order efficiency, معنی اصطلاح second-order efficiency, معادل second-order efficiency, second-order efficiency چی میشه؟, second-order efficiency یعنی چی؟, second-order efficiency synonym, second-order efficiency definition,