用多重网格求解泊松方程，精度好，省时间，与解析解非常接近。-Poisson equation with multi-grid solver, good accuracy, save time, with the analytical solution is very close.

多重网格方法求解矩形边界条件件下泊松方程，偏微分方程数值求解 -Multigrid methods for solving the Poisson equation in the rectangular boundary conditions, partial differential equations numerically solved

用多重网格方法求解泊泊松方程，偏微分方程求解 -Bobo loose equation multigrid methods for solving partial differential equations