A new theory for studying temporal aberrations of dynamic electron optical imaging systems by the direct integral method (DIM) is put forward.
提出了直接积分法(DIM)研究动态电子光学成像系统时间像差的理论。
The two-level discrete complex image method is used to compute the spatial Green's Function, and thus improves the speed to compute Green's function compared with the direct integral method.
该方法采用二级离散复镜像方法求解空间域的格林函数，与直接数值积分方法相比，提高了计算格林函数的速度。
Abstract: The properties of solitary wave solution to multidimensional regularized long wave equations is discussed and one of its solitary wave solution is obtained by direct integral method.
文摘：本文讨论了高维正则长波方程的孤立波解的性态，同时运用直接积分法获得了它的一个孤立波解。
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