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"You know the thickness, tolerances of wood has to be exactly right for the right tone, and volume of a soundboard has to be measured exactly, and that's done mostly by ear.
VOA: standard.2010.07.06
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And the equation of state, pressure versus volume at constant temperature, is going to have some form, let's just draw it in there like that.
系统的态函数，恒温下压强比体积，变化曲线，就像这样。
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And it's more--it's not annoying because of its volume or pitch.
它并没有干扰,因为它的音量和波及范围。
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It's going to have some volume, temperature to begin with, and then we're going to do something to it.
气体有一定的，体积与温度，现在我们。
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Actually we have Milton's commonplace book, his reading notes, and you can find it all in English translation in volume one of The Complete Prose Works of John Milton.
事实上我们有弥尔顿的那本普通的书，他的阅读笔记，你们可以找到完全的英译本,在弥尔顿全部散文作品的第一卷。
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So, I went to the library and I looked up Advances in Molten Salt Chemistry volume six because there's an article in there about the chemistry and electrochemistry of magnesium production.
所以我去了趟图书馆，查阅了,第六版的《高级熔融态盐化学》,因为那里面有一篇关于生产镁的,化学和电化学的文章。
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The important point here is it's not just a probability, it's a density, so we know that it's a probability divided by volume.
它不是概率,而是概率密度，所以我们知道，它是密，除以体积，我们。
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When you buy high and sell low it's really hard to generate returns, even if you do it with great enthusiasm and great volume.
当你高价买入低价卖出时,是很难产生回报的,不管你有多大交易热情或有多大交易量
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Yeah, so like a giant wedge, that's why the cart seems to move in front of you, so we're talking about musical volume here.
对,就像个巨大的楔子,这就是牛车在你面前动起来的原因,所以,我们要谈的是音乐的音量
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Because we did work at constant pressure, and so it's just volume difference times pressure.
因为是在恒压下做功，所以功就等于体积变化乘以压力。
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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。
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If I'm working under conditions of constant temperature and volume, that's very useful.
如果在恒定的温度和体积下,进行一个过程，这是非常方便的。
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It's which partials are particularly prominent, have extra punch or extra volume to them.
答案是有几个特别突出的泛音,为它们提供了额外的冲击力和空间
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It's not constant pressure, because we have a delta p going on. It's not constant volume either.
也不是恒容，这个限制,是这个实验的限制。
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So this is still adiabatic. It's insulated, but now it's constant volume, OK.
这仍然是绝热的，是隔热的，但现在它的体积是恒定的。
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It's now, all we have to do is say we're going to have heat at constant volume.
我们需要做的就是,计算恒定体积下的热量。
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But it's allowed to say the internal energy is a function of temperature and volume.
但是我们也可以说内能,是温度和体积的函数。
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And it's still adiabatic, but now it's constant volume. And it's also reversal right.
它仍然是绝热的，但现在是,在等体条件下，它也是可逆的。
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And if we go ahead and square that, then what we get is a probability density, and specifically it's the probability of finding an electron in a certain small defined volume away from the nucleus.
我们得到的是，一个概率密度，它是，在核子周围，某个很小的,特定区域,找到电子的概率,所以它是概率密度。
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Now let's change the pressure and temperature and sweep through a whole range of pressures and temperatures and measure the volume in every one of them.
然后改变气压和温度,并且让气压和温度,取便所有可能的数值,测量相应的体积。
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And there's disorder achieved by occupying the full available volume.
如果分子能够占据，所有可能的体积,那体系中就会有会无序。
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Now it's constant volume when the volume is constant.
因为体积,保持不变。
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OK, that's the hard sphere volume of the spheres.
有着相互作用力。
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And then we can take the derivative with respect to temperature, it's just R over molar volume minus b.
这样我们求,压强对温度的偏导数，结果等于R除以摩尔体积V杠减去b的差。
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Constant volume, what's zero?
体积恒定，什么是零？
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But there's also a way to get rid of the volume part and actually talk about the probability of finding an electron at some certain area within the atom, and this is what we do using radial probability distribution graphs.
除去体积部分,来讨论,在某些区域内,发现一个原子的概率,我们可以，用，径向概率分布图,它是。
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In this case here, our property is the value of the pressure times the volume, times the molar volume. That's the property.
或者电阻,对气体来说，它的特性是气体压强。
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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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The stuff that's inside the reacting volume, and whatever's right around it there inside the big box, it's all going to heat up.
都会升温，对吧？,在反应容器里的东西,以及大箱子里的任何东西，他们都会变热。
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It's related to the heat capacity, the constant volume of heat capacity and something you could measure.
它联系了热能，恒容热容和一些,我们能够测量的物理量。
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