单词line integral
un.: 曲线积分
曲线积分
But it is still a line integral so it is still going to turn into a single integral when you plug in the correct values.
但是这仍然是一个线积分，代入计算就会发现，这仍然会变为单变量积分。
Since the line of light radiation measurement involves a line integral of the radiating region, data handling and analysis are necessary.
因为光测量是辐射的线积分，数据的处理和分析显得十分必要的。
One of them involves computing a line integral from the origin to a point in the plane by going first along the x axis, then vertically.
一种是从原点开始，沿x轴水平前进，然后沿y轴竖直前进，求出相应的线积分。
It tells you, if you take the line integral of the gradient of a function, what you get back is the function.
它说，如果你对一个函数的梯度做线积分，就能得到原函数。
This one is a line integral. So, you use the method to explain here, namely, you express x and y in terms of a single variable.
这一个是线积分，可以用这里的办法来做，也就是用一个变量来表示出来。
But, you know, it gives you an example where you can turn are really hard line integral into an easier double integral.
但是你知道，它给了你一个例证，其中你可以，把复杂的线积分化成简单些的二重积分。
It gives a relationship between a surface integral over an oriented surface and a line integral along a simple closed curve .
它建立了有向曲面上的曲面积分与它的边界曲线积分的关系。
We said the line integral of F dot n ds is actually the line integral of - Q dx P dy.
我们讲过，F•nds的线积分，实际上就是-Qdx+Pdy的线积分。
If we want to compute the line integral along this guy then we have to break it into a sum of three terms.
如果要计算沿这条曲线的线积分，我们不得不把它分解成3部分。
Then, we just have to, well, the line integral is just the change in value of a potential.
那么我们只需要知道，线积分正是势函数值的变化。