There are data on the rates of diffusion of molecules.
有一些关于分子的扩散速率的数据。
In December 1778, he proposed the plan "for the more general diffusion of knowledge".
1778年12月，他提出了“更普遍传播知识”的计划。
Iron came from West Asia, although its routes of diffusion were somewhat different than those of agriculture.
铁器来源于西亚，尽管它的传播路径跟农业技术的传播路径有些不同。
If technological diffusion and implementation develop faster, workers will have to constantly refresh their skills.
如果技术的传播和应用发展得更快，工人们将不得不持续更新他们的技能。
At low Peclet numbers, diffusion dominates.
在低沛克莱数下，扩散占主导地位。
Although longitudinal diffusion is most rapid, it is of practical importance.
虽然纵向扩散速度最快，但其具有重要的现实意义。
Stimulus diffusion refers to an element of one culture leading to an invention in another.
刺激扩散指的是一种文化元素导致另一种文化的发明。
And that was to some degree a diffusion of our energies.
这从一定程度上分散了我们的精力。
So, let's look at something called the diffusion equation.
来看看扩散方程。
And this diffusion coefficient we'll define in a few moments.
这个扩散系数，我们一会就定义出来。
It also helps diffusion, the way a scent lifts and hangs in the air.
香柠檬油同时也有助于香味的扩散，即香味弥漫并悬浮在空气中的方式。
This diffusion of knowledge accelerated dramatically in recent decades.
近几十年来，知识的传播速度大大加快。
More complex technologies are harder to copy, so their diffusion has been slower.
更复杂的技术模仿起来难度大，传播速度就慢了下来。
So, the diffusion equation is something that governs, well, what's called diffusion.
扩散方程是，适用于扩散过程的。
If you want to be more creative, you can alter the color of the star diffusion effect.
如果你想让图像更具创造力的话，你还可以调整星光柔化效果的色泽。
We now have a star diffusion effect, but it seems quite blurry and it's not every noticeable.
现在我们已经大致有了星光柔化图层的效果，但是看起来有一些模糊，而且也不是很明显。
The defining aspect of Yemen is the diffusion of power rather than the concentration of it.
对也门的形势起着决定性作用的，与其说是权力的集中，倒不如说是权力的分散。
This star diffusion Photoshop effect can interfere with the subject in the photo by covering it.
星光柔化效果的使用会影响到照片中的主题。
Clouds, overcast skies, and fog act as diffusion-something that scatters the light in many directions.
云层、阴沉的天空和大雾都会使光线发生漫射，漫射会将光线分散向各个方向。
It was nontoxic and inexpensive, and it had wonderful diffusion qualities that the liquids couldn't match.
它无毒低价，而且有液体所达不到的扩散特性。
This diffusion of knowledge may actually be the most important reason for the stability of the current system.
知识的全世界分享这种现象可能是保证当今社会稳定性的最重要原因。
The function of RBC is to carry oxygen to the tissues at pressures sufficient to permit rapid diffusion of oxygen.
红细胞（RBC）的功能是携带氧气并保持足够压力以使氧气在组织中快速扩散。
This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
这一不透气的壳层(或边界层)会阻滞水分自由扩散，这种情形称为表面硬化。
Modern travel and communications technologies have made distance almost irrelevant to the diffusion of ideas and opportunities.
现代交通和通讯技术已使距离远近对于传播思想和获得机会几乎毫无影响。
I just wanted to remind you, just to clarify what happened at the end, we got the diffusion equation from two bits of information.
我仅仅是想让你们想起来，仅仅是想讲明上次课结束时说了什么，我们从两方面得到了扩散方程。
I just wanted to remind you, just to clarify what happened at the end, we got the diffusion equation from two bits of information.
我仅仅是想让你们想起来，仅仅是想讲明上次课结束时说了什么，我们从两方面得到了扩散方程。
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