Stop and listen to the universal language of music and bring that positive energy with you everywhere you go."

VOA: special.2009.07.31

You just change volume to pressure and basically you're looking at enthalpy under a constant -- anything that's done at a constant volume path with energy, there's the same thing happening under constant pressure path for enthalpy.

可以看到这就是把体积换成了压强,一般我们都是在一种恒定状态下,考虑焓的，任何在恒容条件下,能伴随能量变化的东西，也在恒压条件下伴随焓同样地变化,所以你可以经常。

麻省理工公开课 - 热力学与动力学课程节选

And what we end up with for the energy then is 2.84 times 10 to the -19 joules.

我们算出的能量是,2，84乘以10的-19次方焦耳。

麻省理工公开课 - 化学原理课程节选

He says when it comes to saving energy and money, big changes start with small steps like turning out the lights.

VOA: special.2010.03.22

And, at the other extreme, we have elements with very high value, elements with high average valence electron energy.

另外，在另一端，我们有原子序数较大的元素，这些元素有着较高的平均化合价和电子能。

麻省理工公开课 - 固态化学导论课程节选

The answer: solar panels. Energy from the sun powers the satellite dishes and computers that link the areas with the world outside.

VOA: special.2009.02.16

That is, you minimize potential energy and you see things falling under the force of gravity and so forthgoing to potential energy minima in conformance with this result.

换句话说，你使得势能最小化,然后发现我们关注的东西,在重力或者其他力的作用下下落,直到势能最小的地方,这和我们刚才的结果是一致的。

麻省理工公开课 - 热力学与动力学课程节选

The critic praised the extraordinary energy of the dancers who combine traditional dance with ballet and modern dance.

VOA: special.2009.03.11

You get things in the energy of the room with so many students so you wouldn't just get from your computer.

和大家一起，在课堂的气氛中学习,而不是仅仅对着电脑。

哈佛公开课 - 幸福课课程节选

But with fewer solar panels, they fell behind the German team on the most important requirement: energy production.

VOA: special.2009.10.27

Eh, I'm sorry, north American energy community, with Canada and Mexico, both of which have oil.

嗯，对不起，北美能源共同体，与美国与加拿大一道，它们都有石油资源。

普林斯顿公开课 - 国际座谈会课程节选

But it is the energy of the artists and their willingness to share their work with others that makes the festival so interesting.

VOA: special.2009.08.05

And then the investigators actually measured these things, and found that with reported and actual energy intake, how many calories people were consuming, there was really quite a difference.

研究人员实际上得到了以下结果,实验对象汇报的和实际的能量摄入,也就是人们摄入的卡路里,两者有较大差异

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

He said his plan would balance the need for energy with the need to protect natural resources.

VOA: special.2010.05.01

And it turns out the second solution, with negative energy, was when the theory is telling you, hey, there are particles and there are anti-particles, and the negative energy when properly interpreted will describe anti-particles.

结果,后来证明,第二个根,也就是能量为负的那个根,正是理论的关键,世界上既有粒子,也有反粒子,负能量就是用来解释反粒子的

耶鲁公开课 - 基础物理课程节选

In recent years, public opinion studies show more than half of Americans approve of nuclear energy with greater support among men than women.

VOA: special.2010.02.19

OK, elements with low average valence electron energy, and here I'm saying below 11 electron volts, these are good electron donors.

平均价电子能都较低的元素，我是指那些低于11电子伏的，这些是很好的电子给体。

麻省理工公开课 - 固态化学导论课程节选

Mister Obama promised to work with them on important issues including energy development and climate change.

VOA: special.2009.11.13

Because here what we have is some atom that we're studying, in the case, it's going to be a gas, and we hit it with a photon that has some incident energy.

因为这里我们要研究的是一些原子,在这种情况下，一般是气态的，然后我们令一个,具有一定初始能量的光子打上去。

麻省理工公开课 - 化学原理课程节选

It says it will work with manufacturers of high-energy products to try to improve energy use.

VOA: special.2009.07.17

In the case here, tha t I just illustrated with the little cart going down the valley, would be exactly the same with regular energy, the equilibrium state is one of lowest energy, right.

在现在所考虑的情况下,我刚才所描述的小车沿着山谷下行，结论会像能量判据一样，平衡态是能量最低的态。

麻省理工公开课 - 热力学与动力学课程节选

With another scientist, Mister Fermi wrote a nineteen forty-seven report to the Atomic Energy Commission.

VOA: special.2009.06.14

Let's say, well, maybe it has to do with the energy that it takes to remove electrons.

比如说，也许它和那些,用来移动电子的能量有关。

麻省理工公开课 - 固态化学导论课程节选

John Lewis was interested in jazz,blues,and bebob, a music with a great deal of energy.

VOA: special.2009.03.01

That is to say I can now reroute that sodium plus chlorine reaction and go a different way, but I still end up with the same change in energy.

也就是说，我可以重新定义一种,钠与氯的反应途径,从另一种途径来实现反应，但是能量的变化过程相同。

麻省理工公开课 - 固态化学导论课程节选

Uffe Hellsten works with the Department of Energy Joint Genome Institute in Walnut Creek,California.

VOA: special.2010.06.29

They're not interacting at all so that's why the energy is the same as that for two individual atoms, that's what we're dealing with. As we get closer together, we start get lower and lower in energy.

它们之间没有任何相互作用，因此,体系的能量就等于两个分开的原子的能量，这就是我们要处理的，而随着我们的距离越来越近，我们的能量开始变得越来越低。

麻省理工公开课 - 化学原理课程节选

By supporting nuclear energy, the president may be seeking common ground with Republicans who have called for building as many as one hundred new nuclear power centers.

VOA: special.2010.02.19

So it's going to keep in mind the limitations, so let's start off with talking about ionization energy.

那么让我们将这些局限性记在心里，继续来讨论一下电离能。

麻省理工公开课 - 化学原理课程节选

Energy means, you know, chemical reactions happen, and you end up with something that might be exothermic, that is, the products are more stable then the reactants.

能量表明，当反应发生之后，你最终会得到放热的产物，换句话说就是产物比反应物更稳定。

麻省理工公开课 - 热力学与动力学课程节选