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This extra heat can raise temperatures in cities by about one to three degrees Celsius compared to rural areas.
VOA: special.2010.03.02
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But this is a compound, right, it has some non-zero heat of formation from the elements. So is water, right?
但这是种化合物，对吧？,它具有非零的生成热,水也是一样，对吧？
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All right, so this is the heat flowing in or out of the system, and these are all functions of state.
好的，这就是系统的热量变化,这些都是态函数。
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This could be a serious problem. The shield protected the spacecraft from burning up from the extreme heat of re-entering the Earth's atmosphere.
VOA: special.2009.06.17
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She's stuck to a -- this is remarkable: she's stuck to a "marble venomed seat smeared with gums of glutinous heat."
这个值得注意，她坚持坐在,涂满胶状树胶的邪恶石头凳子上“
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"This fall,I'm going to take my talents to South Beach and join the Miami Heat."
VOA: special.2010.08.06
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Well, does one feel any nostalgia now for the coolness and heat of this moment?
由于这个时代的冷暖,人们会怀念过去吗？
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Some people,for example, do this if they exercise hard during a heat wave.
VOA: special.2010.07.27
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The native structure is this double stranded structure here and if I heat it up slightly and I add some base, so under slightly basic conditions, these molecules will fall apart because you've created conditions where the hydrogen bonding is no longer favorable so they peel apart.
原始结构,在这里就是指DNA双链,如果我稍微加热,并且加入一些碱,在弱碱性的条件下,这些配对碱基会分开,这是因为在一定条件下,碱基对之间的氢键,不再稳定并且会断裂分开
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This metal surface, placed in contact with the water, will heat the water.
VOA: special.2009.04.20
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qB This must be heat q B, right. So again, but now let's also look at our special function.
这个不是，这应该是热量，对吧？所以又一次，这些是我们熟悉的。
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This week, we tell about health problems linked to extreme heat.
VOA: special.2010.07.27
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It's not going to be zero this time because we have non zero heat exchange between the system and the environment, right.?
热力学量，但是现在让我们看一下,我们的特殊函数，这次它不会是零,因为系统与外界的热量交换并不是零，对吧？
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This intense heat they project in a parallel beam against any object they choose, by means of a polished parabolic mirror of unknown composition, much as the mirror of a lighthouse projects a beam of light.
VOA: special.2010.09.01
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When I flail my arms around I generate work and heat. This is not a constant volume process.
这不是一个恒容过程,但如果我是一个系统，当我做这些的时候。
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(CANNED HEAT - "GOING UP COUNTRY") And this was how the New York Times described Woodstock: "Bethel townspeople gazed in awe at the streams of hippies, but they murmured 'PEACE' to the visitors, offered free water and returned smiles.
VOA: special.2009.08.10
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OK, so let's go through this and see what we would do which is to calculate the heat and the work. This is well insulated.
好的，让我们开始然后看看,我们该怎样计算热量和功的大小,这是完全绝热的，所以。
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Some Muslims say they are feeling the heat. This man says the FBI raided his home and downloaded information from his children's computers, loaded with cartoons.
VOA: standard.2010.05.18
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You can still calculate the heat that's released. This is what will tell you under some particular conditions what will actually happen. Where will you end up.
你仍然可以计算放热,在特定条件这些下这些物理量,能告诉我们将会发生的事情。
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They've been heading out extra early this week to beat the heat.
VOA: standard.2010.07.20
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So that's our work in this path and heat.
这就是这个过程中的功和热。
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This one turns out to be the heat capacity, and this one turns out to be something that we measure in the Joule-free expansion.
其实，这就是热容，这是焦耳自由膨胀实验中,我们要测量的物理量。
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The heat-added, temperature, and this is a proportionality constant.
这是热，这是温度，这是比例常数。
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q2 So q2, the heat in this way is negative.
所以沿这个方向的，是负的。
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So in this case here, I cool and then I heat.
因此我们这个路径中。
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This is the negative heat of formation, right?
这里是负的生成热，对吧？
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In this case here, I heat and then I cool.
需要先冷却再加热。
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This is isothermal. This is adiabatic, there's no heat.
一个是等温，一个是绝热。
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This is providing work that's being used in here, but if you take the whole outside of the surroundings and this whole thing is the system, no net work, these things cancel each other, and yet heat's going up.
如果把外面的全部当成环境，把这里的全部当成系统,那么就没有净的功，它们相互抵消了，热量向上传输，会发生什么？
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q Work is zero. Delta u is w plus q, work plus heat. This is zero, this isn't.
功是零，△U是w加，功加上热量，这个是零。
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