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。
In this paper, the numerical results of burning gas flow in the vertical launch system of a rocket are reported. A second-order accurate MUSCL scheme is employed.
本文报导了火箭垂直发射系统燃气流场的数值计算结果，在计算中采用二阶精度的MUSCL格式。
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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