进一步指出了高斯光束作为波动方程傍轴近似解的条件。
Furthermore, the conditions have been given that Gaussian beam is a paraxial approximation solution of the wave equation.
采用时间上二阶、空间上高阶近似的交错网格高阶差分公式求解三维弹性波位移-应力方程，并在计算边界处应用基于傍轴近似法得到的三维弹性波方程吸收边界条件。
Here, we use second-order, temporal - and high-order spatial finite-difference formulations with a staggered grid for discretization of the 3-d elastic wave equations of motion.
应用推荐