辅助常微分方程
additional ordinary differential equation
auxiliary equation
非驻定常微分方程
non-autonomous ordinary differential equation
非线性四阶常微分方程
nonlinear fourth order differential equation
非线性常微分方程
nonlinear order differential equations
nonlinear ordinary differential equation
nonlinear differential equation
非齐线性常微分方程
Nonhomogeneous linear ordinary differential equati
二阶线性常微分方程
2-order linear ordinary differential equations
second-order linear ordinary differential equation
the linear equations of second order
二阶非线性常微分方程
Second-order nonlinear ordinary differential equat
二阶常系数线性微分方程
non-homogeneous linear equation of constant coeffi