非线性四阶常微分方程
nonlinear fourth order differential equation
非线性四阶微分方程
nonlinear fourth-order differential equation
某类四阶微分方程
a class of differential equation with four orders
四阶微分方程
fourth-order differential equation
fourth-order differential equations
fourth order differential equation
differential equation of fourth order
differential equation with four orders
n阶常微分方程
nth order ordinary difFerential equation
n th order nonlinear differential equation
n-th order differential equation
二阶常微分方程
ordinary differential equations
Second order ordinary Differential Equation
second-order ordinary differential equation
altruistic adaptation
二阶常微分方程组
second order ODEs
a coupled systems of second order differential equation
非线性三阶常微分方程
nonlinear third-order ordinary differential equation
高阶常微分方程
Higher order ordinary differential equations
High order differential equation
higher-order ordinary differential equation
differential equation with higher order
奇数阶常微分方程
2n+1-order odinary differential equation
奇异二阶常微分方程
singular second-order ordinary differential equati
三阶常微分方程
third-order ordinary differential equation
third-order ordinary differential equations
third-order differential equation
一阶常微分方程
first order ordinary differential equations
first order ordinary differential equation
一阶常微分方程组
first-order ordinary differential equations
first ordinary differential equations
泛函微分微分方程
functional differential equation
四阶抛物型积分－微分方程
fourth order parabolic integro-differential proble
fourth order parabolic integro-differential problems
四阶线性抛物型积分-微分方程
fourth order parabolic integro-differential problems
Kolmogorov高阶微分方程组
the high-order kolmogorov differential system of e
n阶变系数线性常微分方程
n-order variable coefficients of linear ordinary d