中心爆炸源sarma吸收边界程序。四个子程均是采用sarma吸收边界条件，其中

1. GAC.m是加了过渡带的，对左右下三边处理的；

2. GAC2.m是没有加过渡带的，对左右下三边处理的；

3. GAC3.m是加了过渡带的，对四边都处理的；

4. GAC3.m是没有加过渡带的，对四边都处理的；-Center explosion, sarma absorbing boundary program。

Four sub-processes are using sarma absorbing boundary conditions, which 1. GAC.m added a transition zone, the left and right under the trilateral process　2. GAC2.m is not added to the transition zone, the left and right under the trilateral process　3. GAC3.m added a transition zone of the four sides are treated　4. GAC3.m is not added to the transition zone of the four sides are treated