difference differential equation [数] 差分微分方程
ordinary difference differential equation [数] 常差分微分方程
neutral type difference differential equation 中立型微分差分方程
nonlinear difference-differential equation 非线性差分微分方程
stochastic difference-differential equation 随机差分微分方程
mixed type difference differential equation 混合型差分微分方程
differential difference equation 差分微分方程
nonlinear differential-difference equation [数] 非线性微分差分方程
simultaneous differential-difference equation [数] 联立微分差分方程
But this partial differential equation can not be directly integral, so usually use Navier method, Rayleigh Ritz method and finite difference method and other methods.
但这一偏微分方程不能直接积分，所以通常用纳维法、瑞利-里兹法、有限差分方法等方法求解。
The mixed partial differential terms of time variables and space variables in the pseudo-parabolic equation make the discussion of the difference scheme more difficult.
伪抛物型方程中关于时间与空间变量的混合偏导项给差分格式的讨论带来了一定难度。
Studying Brownian motion by the difference equation, We can find that the partial differential equation describing the Brownian particle motion is a diffusion equation in mathematical physics.
引入差分方程研究布朗运动，会发现极限情况下的布朗运动所遵循的偏微分方程就是数学物理方程中的扩散方程。
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