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The Sechenov Morgue, a Czarist-era red brick building located across the street from a Moscow city hospital, saw constant comings and goings of family groups dressed in black.
VOA: standard.2010.08.10
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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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Now for this experiment, this is a constant enthalpy experiment for the Joule-Thomson experiment, this is equal to zero.
对于这个实验，焦耳-汤姆逊实验,是一个焓不变的实验,焓变化等于0，所以我可以。
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Polls show public support for Mr.Obama's push for health-care reform has weakened in recent weeks, and the constant drumbeat of criticism at the town hall meetings has fed the perception that the political momentum for reform has slowed.
VOA: standard.2009.08.12
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It's this drive to constant self-definition that becomes the characteristic feature of Milton's work for later generations.
就是这种对自我界定的欲望,变成了弥尔顿留给后人的,作品的典型特征。
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Linear algorithms tend to be things where, at one pass-through, you reduce the problem by a constant amount by one. If you reduce it by two, 1 it's going to be the same thing.
有问题么？,线性复杂度的算法，当进行了一个,常量级步数的操作的时候，将问题的规模缩小了一个。
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So you cannot use the formula once it hits the ground because once it hits the ground, the fundamental premise that a was a constant of -9.8 or -10 is wrong.
当物体落地以后,该公式就不适用了,因为当物体落地后,公式的基本前提——,加速度为常数-9.8或-10——就不成立了
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But even if you do survive-- let's the ground floor-- even if you do survive, you would lead a life of constant frustration-- refusing to accept something that is there whether you like it or not.
即使你幸存下来-,比如你在一楼-,就算你真得幸存下来，你的生活将是处处受挫-,拒绝接受现实事物,不论你喜欢与否。
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What we need to do is get rid of the Coulomb tag that we have - that's how we measure our electron charges - charge, and so we use this epsilon nought quite often, this permativity constant of a vacuum to make that conversion.
怎么量度电子电荷,所以我们会经常用到,这个epsilon，nought记号,这是真空中的介电常数,我们还要指出,这个介电常数。
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What we've been talking about, the Joule-Thomson experiment, constant enthalpy process?
首先，刚才说的，那些有什么问题吗？,焦耳-汤姆逊实验，等焓过程？
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and we like log algorithms, because they're really fast. A typical characteristic of a log algorithm is a pro-- or sorry, an algorithm where it reduces the size of the problem by a constant factor.
并且我们也很喜欢对数算法,因为它很快,对数算法的典型特性是高速，哦，抱歉，是他能以常数因子的速度,降低问题的大小，很明显。
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OK, so we ended up last time, we talked about Joule-Thomson expansion, which is an irreversible expansion through a nozzle, through a porous plug, constant enthalpy expansion.
上节课，我们讨论了焦耳-汤姆逊，膨胀过程,也就是气体，通过毛细管。
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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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Fish imagines Milton as always on some level slapping the reader's wrist, reminding the reader of his or her fallen-ness, that there's a constant pedagogical correction going on.
费什想象弥尔顿总是在某种程度上斥责着读者们，提醒他们自身的堕落，并且诗中有一种持续的教育性的纠正在重复出现。
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Obviously-- and that's a bad way of saying it, I said constant the previous time-- in the linear case, it's subtract by certain amount.
这么描述很不准确，我之前在，线性算法中也说了常数,它是每次减少固定的量。
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This is equal to zero. So this irreversible process this Joule-Thomson process, is a constant enthalpy process. Delta h for this process is equal to zero.
等于0。所以这个不可逆过程,也就是焦耳-汤姆逊过程,是一个等焓过程。
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It could be non-spacially constant.
空间分布也不均匀。
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The Joule experiment was a constant energy experiment, right. Here we're going to have to find a constant enthalpy experiment, and that is going to be the Joule-Thomson experiment. That's going to extract out a physical meaning to this derivative here.
非常像焦耳实验,焦耳实验是一个能量恒定的实验,我们这里要做的是，找到一个焓不变的实验,也就是焦耳-汤姆逊实验,这个实验可以把这里的微分式形象化。
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Let's take a system. Under constant pressure T1 V1, going to a second -- this is the system, so let me write the system here.
我们建立一个系统1,在恒定的压强T1，V1，下，变成了另一个系统，-这个初始的系统让我把它写在这。
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It will typically look like this and the formula we say is F = - kx, where k is called "The force constant."
图像看上去一般就像这样,对应的式子是 F = - kx,k 叫做"弹性系数"
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The person who best captures the unconstrained view, Benjamin Constant, French philosopher and politician, " "It is for self-perfectioning that destiny calls us."
最好地阐述了本性受约束观点的人，法国哲学家政治家Benjamin，Constant说，“命运召唤我们进行自我完善“
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We said, "Let's take, for the simplest case that we can possibly imagine, namely a particle moving in one dimension along the x-axis with a constant acceleration a.
我们说过,"考虑我们可以想象的最简单的情况,即质点在一维空间运动,沿着 x 轴且保持恒定加速度 a
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Over here, we have dq=Cp dT, the heat, the proportionality between heat - and temperature rise is given by this, the constant pressure heat capacity.
这里我有dq=CpdT，这是热量，这是联系热量,和温度变化的系数，恒压热容。
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