Stokes says if I have a closed curveinspace, now I have to decide what kind of thing it bounds.
空间上存在一条闭合曲线，我需要看出它是什么的边界。
2
Because, if you have a curveinspace and say that you have wind or something like that, you cannot really ask how much air is flowing through the curve.
这是因为如果空间中有一条曲线，并假设存在风，或类似的流体，那么我们无法确定，空气通过曲线的量。
3
We take a point on the geometry — the centroid — compute the value for that point on the space filling curve, and store the result in an additional column.