使用 ax.plot_surface () 方法绘制表面，其中 alpha=0.8 参数设置透明度效果，同时添加坐标轴标签以提高图形的可读性和专业性。

Well, then how about a 3d surface plot? Awesome, right? Entering values in manually may be straightforward - but it's not always useful. Let's do something with physics. Electric Potential ...