polar coordinate plane

基本解释

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。
In this paper, the general solution for plane problem of elastic mechanics in polar coordinate system is deduced by separate variable method.
用分离变量法推导出极坐标弹性力学平面问题的一般解，给出了问题的解答全貌，为解决各种具体问题提供了理论基础。
And cylindrical coordinates only mean that we are, instead of x, y and z, y we are replacing x and y by the polar coordinate in the x, y plane, r so the angle theta and the distance r.
柱坐标系就是，用平面上的极坐标替换x和，即角θ和距离。