And so it will be a surface integral, not a line integral anymore.
所以要用面积分，而非线积分。
It is a surface integral, so we need to have two variables in there.
它是一个面积分，所以这里需要两个变量。
OK, and that surface integral, well, it's not for the same vector field.
这个曲面积分，不是同一个向量场。
Use geometry or you need to set up for double integral of a surface.
总之，就是用几何方法或是在曲面上建立二重积分。
Now, how would we actually set up a flux integral on such a surface.
下面应该如何，在这样的曲面上建立通量的积分。
Because a surface is a two-dimensional object, that will end up being a double integral.
由于表面是二维的，所以结果是二重积分。
Mural: Painting applied to and made integral with the surface of a wall or ceiling.
壁画：描绘在建筑物墙壁和天花板上并与其成为一体的绘画。
Granularity has great influences on the surface finish and integral cutting speed.
粒度对表面光洁度和整体切割速度具有重大影响。
Granularity has great influences on the surface finish and integral cutting speed.
粒度对表面光洁度和整体切割速度具有重大影响。
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