second order difference equations 二阶差分方程
second order delay difference equations 二阶滞后差分方程
second-order nonlinear difference equations 二阶非线性差分方程
second order nonlinear difference equations 二阶非线性差分方程
second order neutral difference equations 二阶中立型差分方程 ; 中立型差分方程
The main contents of first chapter are several difference schemes of first-order and second-order differential equations.
第一章有限差分方法主要内容是一阶和二阶的两点式、三点式和五点式差分方案。
The TM set of equations can be solved using a finite difference time domain (FDTD) approximation that is second-order accurate in both space and time.
采用时间和空间均为二阶精确的有限差分方法，将偏微分方程进行差分化。 这样，空间的电磁场可由时间域有限差分法（FDTD）来求解。
Modifying the salinity difference format and salinity equations of the original model, the present model USES the second-order accurate difference format and introduces the term of physical diffusion.
改进了原模式的盐度差分格式和方程，采用二阶精度差分格式并引入了物理扩散项。
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