So the idea of spherical coordinate is you're going to polar coordinates again in the rz plane.
所以说球坐标系,其实就是在rz平面再建立一个极坐标。
2
And, in terms of a graph, they correspond to slicing by a plane that's parallel to one of the coordinate planes, so that we either keep x constant, or keep y constant.
从图像上看,它们对应于,用平行于坐标轴的平面横截图像得到的,过程中保持x或y恒定。
3
We often have to finish the work of transformation between Rectangular PlaneCoordinate Systems.