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).

• 这些公式均可用于求解非线性一阶常微分方程组；且是对Lotkin(1951)、Ralston(1962)、Merson(1975)、Scraton(1964)、England(1969)的结果的一种改善和推广.