These formulas can be applied to non-linear systems of first-order ordinary differential equation,and are the improvement and extension of the results that aredue to Lotkin(1951),Ralston(1962),Merson(1957),Scraton(1964)mad England(1969).是什么意思_These formulas can be applied to non-linear systems of first-order ordinary differential equation,and are the improvement and extension of the results that aredue to Lotkin(1951),Ralston(1962),Merson(1957),Scraton(1964)mad England(1969).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句