... dielectric strain电介质应变 difference differential equation差分微分方程 difference equation差分方程 ...
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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。
By deriving balanced differential equation of buried pipeline, adopt finite difference method to analyze and calculate the effect of axial build-in force on pipeline transversely displacement.
推导出埋地管道的平衡微分方程，采用有限差分法分析并计算了轴向嵌固力对管道横向位移的影响。
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