polar coordinate

常见例句

This guy, you have two different ways of getting its polar coordinate equation.
有两种办法,可以得出极坐标系下的方程。
Say, polar coordinates. Let's say that I have a function but is defined in terms of the polar coordinate variables on theta.
比如说极坐标，有一个函数,是根据极坐标θ定义的。
And because you integrate first over r, well, first of all you should remember the polar coordinate formulas, namely x equals r cosine theta and y equals r sine theta.
这样的话，我们就先对r积分，当然了，首先得要记住坐标转换的公式，也就是x=rcosθ，y=rsinθ