说明：  详细比较了Matlab三维画图中的几种命令，即mesh，surf，ezmesh，ezsurf，surfc，meshc，ezsurfc，ezmeshc，并且附加我的个人使用经验
(Detailed comparison of the three-dimensional drawing of several Matlab commands, namely, mesh, surf, ezmesh, ezsurf, surfc, meshc, ezsurfc, ezmeshc, and add my personal experience)