这个主要是讲解声波方程数值模拟的，实现了无反射波动正演，可应用与非均匀介质有两种吸收边界条件-This is mainly to explain the numerical simulation of acoustic wave equation, to achieve a non-reflective wave forward, can be applied with non-uniform medium, there are two absorbing boundary conditions

实现了规则网格下的声波波动方程有现车分正演模拟，时间2阶空间4阶-Achieve the acoustic wave equation under the rules of the grid there are cars of forward modeling, time 2 order spatial order 4

实现了声波波动方程有限差分正演模拟，交错网格下，时间2阶空间10阶-Achieve the acoustic wave equation finite difference forward modeling, staggered under the grid, the time second-order space 10 order