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1·I am going to use polar coordinates.

我将用极坐标。

2·Let's check what we had for polar coordinates.

我们来回顾一下极坐标。

3·And I would like to switch that to polar coordinates.

把它转换到极坐标系下。

4·Anyway, that is double integrals in polar coordinates.

这是极坐标系下的二重积分。

5·Or I can use polar coordinates,and it works a little bit better that way.

或者还是用极坐标系，这比直角坐标系更好。

6·OK, the right way to do this will be to integrate it in polar coordinates.

这道题最合适的方法，应该在极坐标系里面计算。

7·The claim is we are able, to do double integrals in polar coordinates.

这也就说明了，可以用极坐标做二重积分。

8·And, of course, we know also how to set up these integrals in polar coordinates.

当然，我们也知道，怎样用极坐标来计算这些积分。

9·With the plot command, gnuplot can operate in rectangular or polar coordinates.

使用plot命令，gnuplot可以在直角二维坐标系中进行操作。

10·If my solid is actually just going to be round then I might want to use polar coordinates.

如果实体是圆形状的话，那就可以考虑用极坐标系。