Researchers say they observed shortages in the brain's reward system in patients with A.D.H.D.

VOA: special.2009.09.29

So, we see that the two h atoms separate have a certain energy that's lower than when the electron's not with the atom.

那么，我们看到两个分开的氢原子所具有的能量,比原子中没有电子时更低。

麻省理工公开课 - 化学原理课程节选

So, I just want to write a few examples down with a few values for delta u or delta H or delta S, and see whether we can get any clues from what we see.

我先写一些例子,例子包含一些内能，自由焓和熵的变化数值，然后看从中,我们能不能得到一些启示。

麻省理工公开课 - 热力学与动力学课程节选

Sixty-five thousand H-1Bs are awarded each year to graduates with a bachelor's degree.

VOA: special.2009.07.02

H2 So the simplest case we can think of is with h 2 where we have two unpaired electrons, each in a 1 s orbital of a separate h atom.

最容易想到的例子是2,我们有两个未配对电子，每个都在一个分开的1s轨道上。

麻省理工公开课 - 化学原理课程节选

Researchers studied the pathways on which dopamine travels in fifty-three adults with A.D.H.D.

VOA: special.2009.09.29

Well, we would have to H+ have one of these hydrogen atoms go to an H plus, * plus an electron, right? **H --> H+ + e-** So, now we have a hydrogen ion here.

我们先要让,一个氢原子变成氢离子，加上一个电子，对么*,我们现在有一个氢离子了。

麻省理工公开课 - 固态化学导论课程节选

He says the finding might also help explain why people with A.D.H.D.

VOA: special.2009.09.29

In a .h file, it's generally the names of functions other people wrote.

在头文件里,只有一些函数名。

哈佛公开课 - 计算机科学课程节选

Researchers compared the pathways that transmit dopamine in fifty-three adults with A.D.H.D.

VOA: special.2009.09.16

This is a painter called Frans Hals, H-A-L-S.

这是画家法兰斯·霍斯的作品

耶鲁公开课 - 欧洲文明课程节选

"There was a lower concentration of dopamine markers in the brain of individuals with A.D.H.D., specifically in the areas of the brain that are involved with reward and motivation."

VOA: special.2009.09.29

Therefore, from experiments, u is only a function of temperature for an ideal gas, H and therefore from these experiments, 0 we come out with delta H dH/dp is equal to zero.

因此，从实验可以得出,对于理想气体u只是温度的态函数，因此从这些实验中我们得到Δ,偏H偏p等于。

麻省理工公开课 - 热力学与动力学课程节选

In South Africa, a campaign of text messages about H.I.V.

VOA: special.2010.05.03

The more important thing that I want you to notice when you're looking at this wave equation for a 1 s h atom, is the fact that if you look at the angular component of the wave function, you'll notice that it's a constant.

我要你们注意的,更重要的一点是,当你们看到,这个氢原子1s轨道方程的时候，如果你们看,波函数，的角向部分，你们会发现它是一个常数。

麻省理工公开课 - 化学原理课程节选

Adults can also have it. People with A.D.H.D.

VOA: special.2010.05.26

So notice a difference in these structures, is this has an n h bond whereas this has an o h bond.

注意它们之间的有一点不同，那就是一个有氮氢键,而另一个有氧氢键。

麻省理工公开课 - 化学原理课程节选

Children with A.D.H.D. might have trouble paying attention.

VOA: special.2009.09.16

So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.

比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。

麻省理工公开课 - 化学原理课程节选

Children with A.D.H.D.

VOA: special.2009.09.29

It is underpopulated right now, so if you are still shopping for a humanities subject, this one bears the precious CI-H designation.

现在它们的选课人数比较少，如果你们还需要一门人文学科，这些都是很可贵的沟通密集型课程。

麻省理工公开课 - 固态化学导论课程节选

The cancer scientists say this cancer often begins with an infection caused by a bacteria called Helicobactor Pylori, also known as H-Pylori.

VOA: standard.2010.05.12

So what we'll have here is a trigonal planar case, and you can see that we only have three electrons that are set for bonding, so we'll add three hydrogens, and for b h 3, we'll get a stable structure here.

让电子劲量远离的时候，不用考虑它,这个例子是平面三角形，你可以看到，只有3个电子可以成键。

麻省理工公开课 - 化学原理课程节选

Mark Hurd was out. Investigators said he had falsified expense records to hide spending on a woman who worked with H-P.

VOA: special.2010.08.13

include cs50 h But this says include and this says include a file called cs50.h that lives in some special place on the server that the cs50 staff wrote.

这里写在,众所周知，cs50，h是由CS50的员工,编写的一个库文件。

哈佛公开课 - 计算机科学课程节选

Doctor Fukuda, an acting assistant director-general, said the W.H.O.has been working with the member states to prepare for a pandemic.

VOA: special.2009.06.10

So now we have a different sign for delta H and it still happens spontaneously.

现在自由焓的变化的符号不一样了,但是这个过程仍然自发的进行。

麻省理工公开课 - 热力学与动力学课程节选

Researchers say they have found a way to extend the storage life of a drug used to treat H.I.V.

VOA: special.2010.05.24

And if you work out the energetics as we've gone with thermochemistry, dH you discover there's a huge negative delta H.

如果你计算能量变化,就像在化学热力学中所作的一样，你会发现很大的负的。

麻省理工公开课 - 热力学与动力学课程节选

H for an ideal gas is only a function of temperature. This is not true for a real gas fortunately, but it's true for an ideal gas.

不正确的,但是幸运的是,对于理想气体是完全正确的。

麻省理工公开课 - 热力学与动力学课程节选