Salts are enriched around electriferous groups of polymer molecules in solution, which formed a salt concentration gradient.
溶液中的盐份富集在聚合物分子的带电基团附近，并形成盐浓度梯度分布。
When there's a smaller gradient, air is often able to flow down from the Arctic.
而当它们之间只有一个较小的气压梯度时，风就能够经常从北极区向南吹。
And we have learned how to package partial derivatives into a vector, the gradient vector.
我们也知道了，如何将各个偏导组合成一个梯度向量。
He USES psychological tests to reveal the subjects' responses to conditioned danger cues and conditioned safety cues arrayed on a gradient.
他运用了一些心理学试验，这些试验显示，研究对象对一定梯度的条件性危险信号和条件性安全信号的反应。
There is a social gradient in health that runs from top to bottom of the socioeconomic spectrum.
健康方面的社会梯度从社会经济状况的顶端延伸到底部。
And it is a gradient field in that part of the plane and conservative and so on. The answer for now is, in general, no.
在那部分平面上，梯度场，是保守的，目前来说结论一般是不对的。
Now, if I rotate, the the slope sort of increases, increases, increases, and it becomes the largest when I'm going in the direction of a gradient.
如果旋转的话，那么斜率会变大，变大，变大，当和梯度方向一致时，它达到最大值。
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。
So, if the gradient of a function is a vector, the divergence of a vector field is a function.
如果说函数的梯度是向量，那么向量场的散度就是函数。
So, it's more subtle than that, but certainly if it's not conservative then it's not a gradient, and you cannot do what we said.
这确实有些微妙，不过如果它不保守，就肯定不是梯度，就没有之前那些性质。
Ok, so just to reinforce my warning that not every field is a gradient field, let's look again at our favorite vector field from yesterday.
好的，为了强调，不是所有场都是梯度场，我们再来看看昨天那个向量场。
So, if you have a gradient field, it's what's called conservative.
如果有一个梯度场，它也是一个保守场。
Well, if we know that it's a gradient field, that we've seen that we get these properties out of the fundamental theorem.
如果我们知道它是一个梯度场，就可以由基本定理，得到上面那些性质。
So, I claim, in fact, we could have done this without the gradient, or using the gradient in a somehow disguised way.
事实上，我们可以不用梯度来求这个，或者说变相的利用梯度。
One is to say that the vector field is a gradient in a certain region of a plane.
一个是向量场,在给定平面区域内是梯度场。
So, actually on Tuesday we'll see how to decide whether a vector field is a gradient or not, and if it is a gradient, how to find the potential function.
周二我们就知道，怎样确定一个场是不是梯度，如果确实是梯度的话，怎样算出势函数。
Using the gradient Tool (g) with a Black to 0% opacity gradient, click and drag a gradient from the bottom up into the planet for the bottom and from the top down for the top of the planet.
使用渐变工具，设置黑色到0%不透明的渐变，从画布底部向上点击拖拉渐变到行星位置，然后，从画布顶部点击拖拉渐变到行星顶端。
Note that this is a radial gradient, whereas earlier you saw a linear gradient.
注意，这是一个放射状渐变，而此前您看到的是一个线性渐变。
So as you can see below, here we're adding a Gradient Overlay from black to white, faded out a bit and on Overlay mode.
你在下面可以看到，这里我们正在添加一个从黑到白的梯度覆盖，在覆盖模式下淡化一点。
And, basically, we say that these properties are equivalent being a gradient field or being path independent or being conservative.
根本上说，以下性质是等价的，一个向量场是梯度场，等价于积分与路径无关，也等价于向量场是保守的。
This design sucks...I'll add a rectangle with a gradient fill!
这个设计太难看了…我要在这里加上一点渐变填充的方块！
If we have a vector field that cannot possibly be a gradient then we shouldn't try to look for a potential.
如果一个向量场不可能是梯度场，那我们就不应该尝试去找势函数。
The study measured childhood self-control using parent and teacher assessments and included a gradient from low self-control to high self-control.
该研究使用父母和老师的评价以及从低控制力到高控制力的自控倾斜线来衡量人童年时期的自控力。
The Fraunhofer device depends on a temperature gradient: the greater the gradient, the more electricity generated.
该装置根据温度变化率工作：温度变化率越大，产生的电能就越多。
添加一个渐变。
And that told us that the flow is proportional to a negative gradient of a concentration.
这告诉我们，流动是和浓度的负梯度成比例的。
Don't go mixing crazy colors and creating muddy transitions, opt instead for a simple gradient.
不必混入疯狂的颜色，也无须制造不明快的变调，只需选择一个简单的渐变。
Finally add a gradient to the sidebar spanning from white to the light grey background to add a little interest and dimension.
最后在侧边栏上添加一个从白色到灰色的渐变来增加些细节和层次。
It changes things quite a bit, however, when it comes to testing whether a field is a gradient field.
然而，当考虑到一个场是否是一个有势场时，它有极大的影响。
It changes things quite a bit, however, when it comes to testing whether a field is a gradient field.
然而，当考虑到一个场是否是一个有势场时，它有极大的影响。
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