second order differential equation meaning in Chinese

二阶微分方程

Numerical solution of second order differential equations
二阶微分方程的数值解。
On the asymptotic behavior of certain second order differential equations
某些二阶微分方程解的渐近性
New oscillatory criterias for certain second order differential equations
一类二阶微分方程的新振动准则
Notes on oscillation for certain second order differential equations
关于一类二阶微分方程的振动性的注记
The existence of periodic solutions of the second order differential equations
二阶微分方程周期解的存在性

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