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He said he was sorry for what he saw as political pressure by President Obama to force BP to set up a claims fund for victims.
VOA: special.2010.06.19
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We could just collect a bunch of data. For a material .What's the volume it occupies at some pressure and temperature?
对一种物质我们可以得到一系列测量数据,在给定的温度和气压下,它的体积是什么？
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And what is inside the gas discharge tube is gas at low pressure.
气体放电管里,有处于低压下的气体。
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"The tires are larger than you would find on a HUMVEE, so the ground pressure, which is really what matters, isn't all that much different from an up-armored HUMVEE,"
VOA: standard.2009.11.02
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OK, now what we'd like to do is be able to calculate any of these quantities in terms of temperature, pressure, volume properties.
现在我们想要做的是能够利用,温度，压强和体积的性质,计算上面的物理量。
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"What we found was that high blood pressure,smoking, overweight/obesity and high blood glucose account for five years of loss of life expectancy in men and about four years in women at the national level."
VOA: standard.2010.04.08
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What we define as zero is the enthalpy of every element in its natural state at room temperature and ambient pressure.
我们将零点定义为每种元素,在室温和正常大气压下,在其自然状态下的焓。
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The senior official said the United States believes Iran might invite leaders from Turkey and perhaps other countries to join in meetings in Tehran with President Lula in what would be seen here as another move by Iran to ease pressure for sanctions.
VOA: standard.2010.05.14
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This is a point that is often confusing, because you can think, well maybe I could calculate what the internal pressure is even for this very rapid process.
这一点可能让你们很困惑，因为你们可以想象这个过程，我也可以计算在这快速的变化中,内部压强是多大。
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"I am one of the few new guys." "I definitely have been able to get a sort of perspective of what to expect and what to look out for in terms of managing the added pressure and different situations that are above and beyond something that I have ever encountered."
VOA: standard.2010.02.09
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Because what we've done is we forced p, pressure here, to be equal to the external pressure.
因为这里我们让内部的压强，等于外部的压强。
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Because if it's irreversible, it's very likely that I don't know what the pressure inside the system is doing while this is happening.
因为对不可逆过程，系统内部的压强,没有明确的定义,气体不处于平衡态。
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Well, I can, for any given case, measure the pressure, determine the entropy and I'll know what the slope of change will be.
好的，对特定的情况，我可以测量压强，确定熵,并且知道这就是变化的速率。
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And so now, instead of using these reference points for the Kelvin scale, we use the absolute zero, which isn't going to care what the pressure is.
就像理想气体温标,与气体的种类无关一样，具有普适性，在开尔文温标中。
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And this volume, temperature and pressure doesn't care how you got there. It is what it is.
另一个状态,也有一组确定的体积。
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But now, what happens if, instead we look at what happens when we go to some state one to some other state two and it's the pressure. Or the volume, that changes.
但是现在，我们看看如果,我们关系从状态一变化到状态二时,体积或者压强发生变化。
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Water boils at different temperatures, depending on what the atmospheric pressure is; same thing for the freezing point.
丹佛和波士顿水的沸点，就不一样;,在不同的大气压下。
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It is taking place inside this thing, and it's a constant pressure, and we'll do it reversibly, right. So that's what we've got.
它是绝热的，在这个内反应,是在恒压下，它是可逆的，对吧？
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So what I'm doing here is I'm cooling, and then when I'm sitting at a fixed volume and I'm increasing the pressure, what am I doing? I'm heating, right?
对了，因此在这里，需要冷却,而在这里，当体积不变增加压强时？
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OK, so this, what I've sketched here would be a constant pressure calorimeter. There's a reaction.
好，我画的就是一个恒压量热计,其中进行一个反应。
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Because so much of what we do in chemistry does take place with constant temperature and pressure.
因为化学中我们所做的很多东西,都是在恒定的温度和压强下进行的。
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so that's what we think we know in constant pressure calorimetry.
好，我想这就是我们,在恒压量热法中所知道的。
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Here we have a fixed volume, and we have a little candle, and we're adding heat, and when we add heat, the pressure does what?
这里我们有一个容器，一个蜡烛，然后我们加热，这时压强会怎么变化？
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I don't know what the pressure is doing in there, doing that expansion.
我不知道这个过程中,内部气体的压强。
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And where does that happen, At what temperature and pressure and so forth.
在什么温度，和压强下。
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For instance, if I have, what is pressure?
它源于小球与容器壁的碰撞？
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Pressure is constant. What is the pressure at?
压强是常数，那么压强是多少呢？
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It doesn't matter what the pressure internal is.
内部的压强是多少无所谓。
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That is, in real life, the variables that you'd normally control aren't some combination of entropy and these variables, but really their temperature, volume and pressure, any couple of those, might be what you'd really have under experimental control.
在生活中，我们所能控制的,不是熵和其他变量的组合，而是温度，体积，压强，以及其中的两两组合,这些才是试验中所能控制的。
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This is going to end up at a different temperature by the way. You saw this last time in a slightly different way. Last time what you saw is we compared isothermal and adiabatic paths that ended up at the same final pressure, and what you saw is that therefore they ended up in different final volumes.
末态温度是不一样的,上次你们看到的,和这个有一点不一样,上次我们比较的是末态压强,相等的等温过程和绝热过程,因此它们的末态,体积是不一样的。
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