URL：https://www.researchgate.net/publication/375774211/figure/fig1/AS:11431281206113723@1700559939610/The-green-surface-SphSigma-varphi-that-solves-the-Dirichlet-problem-over-DrD-r-with_Q320.jpg
掲載元：https://www.researchgate.net/figure/The-green-surface-SphSigma-varphi-that-solves-the-Dirichlet-problem-over-DrD-r-with_fig1_375774211
