• These two relations involving entropy are also useful because they'll let us see how entropy depends on volume and pressure.

    这两个涉及熵的关系也非常有用,因为他们告诉我们,熵和体积,压强的关系。

    麻省理工公开课 - 热力学与动力学课程节选

  • Of course in the reversible case, you're always pushing against an external pressure, which is essentially equal to the internal pressure.

    当然在可逆的情况下,外压力,总是,等于内部压力。

    麻省理工公开课 - 热力学与动力学课程节选

  • And so the photons hitting the wall actually put pressure on the wall, but the pressure is so low.

    所以光子碰撞墙面,事实上在对墙加压,但只是压力很小。

    麻省理工公开课 - 固态化学导论课程节选

  • More importantly, they can affect blood pressure as well, the strength of your heartbeat and the pressure that your heart generates.

    尤为重要的是,这也会影响血压,心跳的强度,和心脏能够输出的压力

    耶鲁公开课 - 生物医学工程探索课程节选

  • Bush has come under mounting pressure from members of his own Party to shake up the White House Staff.

    布什总统受到了,他党派内的巨大压力,让他更换白宫人员。

    普林斯顿公开课 - 国际座谈会课程节选

  • There's naturally a lot of pressure on Milton to make this part of the simile beautiful and striking because he's echoing not just one epic poet, but essentially he's echoing just about every epic poet.

    弥尔顿自然会感受到很多压力,必须得把这个比喻写的美丽动人,因为他不仅是在模仿一个诗人,实际上每个人史诗诗人都是他模仿共鸣的对象。

    耶鲁公开课 - 弥尔顿课程节选

  • You have a little more pressure in grad school, but sometimes that means when you're an undergrad your advisor will decide to put you on projects that maybe when you look at them seem a little bit silly.

    那就是你们没有,要做出重大发现,或取得重大成就的压力,你们在研究生时候会有些压力,当然有时候这意味着。

    麻省理工公开课 - 化学原理课程节选

  • pV=RT dT here because the pressure is constant, dV=RdT/p so dV is equal to R over p dT.

    因为对1摩尔气体有,于是。

    麻省理工公开课 - 热力学与动力学课程节选

  • Let's imagine maybe instead we just immediately dropped the pressure let the system expand against the lower pressure.

    现在假设,我们很快地降低压力,让系统在低的外压力下膨胀。

    麻省理工公开课 - 热力学与动力学课程节选

  • So this unique temperature and unique pressure defines a triple point everywhere, and that's a great reference point.

    这样,无论在何处,三相点都具有相同的温度和压强,十分适合来作参考点。

    麻省理工公开课 - 热力学与动力学课程节选

  • Because it's so important. And I should add and also under reversible work, where the external pressure is equal to the internal pressure.

    而且我还要说应该在外部压强,和内部压强相等的,可逆过程中引入它。

    麻省理工公开课 - 热力学与动力学课程节选

  • 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。

    麻省理工公开课 - 热力学与动力学课程节选

  • In other words, what matters here in changing the pressure volume product? What matters is we turned some reactants into some products.

    换句话说,在改变压强和体积的乘积时,发生了什么?所发生的是我们,把一些反应物变成了生成物。

    麻省理工公开课 - 热力学与动力学课程节选

  • That is, most processes that we're concerned with, they'll happen with something held constant like pressure or temperature or maybe volume.

    这句话是说我们所关注的大部分过程,发生的时候都是保持某个量为常数,比如压强,温度或者体积。

    麻省理工公开课 - 热力学与动力学课程节选

  • Path number 2 on my diagram it's a reversible, this path number 2, it's a reversible constant pressure path.

    路径,首先是一个,等压过程。

    麻省理工公开课 - 热力学与动力学课程节选

  • 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?

    麻省理工公开课 - 热力学与动力学课程节选

  • The piston has a cross-sectional area, a, and the force pressure is force per volume area.

    我们以活塞系统为例,来说明膨胀功。

    麻省理工公开课 - 热力学与动力学课程节选

  • So the force that you're pushing down on here is the external pressure times the area.

    或者压缩功的概念,在活塞上施加压力。

    麻省理工公开课 - 热力学与动力学课程节选

  • Whereas under these conditions, these quantities, if you look at free energy change, for example at constant temperature and pressure, H you can still calculate H.

    但是,在这些条件下,这些物理量,如果我们考察自由能的变化,例如在恒定的温度和压强下,我们仍然可以计算。

    麻省理工公开课 - 热力学与动力学课程节选

  • For instance, the pressure and the temperature, or the volume and the pressure.

    比如压强和温度,或体积和压强。

    麻省理工公开课 - 热力学与动力学课程节选

  • It's a state function, so we're at constant temperature and pressure, and now we want to consider some chemical change or a phase transition or you name it.

    这就是态函数,我们处于恒定的温度和压强之下,然后考虑某些化学变化或者相变,或者你想考虑的东西。

    麻省理工公开课 - 热力学与动力学课程节选

  • If we get the pressure in there just right, we will allow for gas electron collisions and then we get the glow that ultimately was sent through the slits.

    如果我们把气压设置在一个适当程度,把气体电子碰撞也算在里面,我们得到的炽热,最终将通过裂缝传送。

    麻省理工公开课 - 固态化学导论课程节选

  • 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。

    麻省理工公开课 - 热力学与动力学课程节选

  • You've got to put more pressure on one side than the other if you want to push that gas through the throttle, right? So this is where the time scale issue comes into play.

    如果你想让更多的气体通过节流阀,应该使一边的压强,大于另一边,是吗?所以这就是,时间尺度发挥作用的地方。

    麻省理工公开课 - 热力学与动力学课程节选

  • If I place my container of gas on the table here, and I come back an hour later, the pressure needs to be the same when I come back Otherwise it's not equilibrium.

    如果我把装气体的容器放在桌子上,一小时以后我再回来时,气体的压强应该是不变的,否则它就不是平衡的。

    麻省理工公开课 - 热力学与动力学课程节选

  • There's a volume, there's a temperature, than the pressure here. There's other volume, temperature and pressure here, corresponding to this system here.

    温度等状态函数有本质区别,这个状态有一组,确定的体积,温度与压强。

    麻省理工公开课 - 热力学与动力学课程节选

  • And so, again, we see a temperature increase, and we know the work, and the temperature increase, it's a constant pressure thing.

    好,我们看到温度升高了,然后我们有做功量和温度的升高量,这是一个恒定压力下的值。

    麻省理工公开课 - 热力学与动力学课程节选

  • So, these two are equal to each other as well which tells me that this derivative, Cp dH/dT constant pressure is Cp.

    所以这两者也相等,这告诉我们在恒压下微分,等于。

    麻省理工公开课 - 热力学与动力学课程节选

  • 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。

    麻省理工公开课 - 热力学与动力学课程节选

  • 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?

    麻省理工公开课 - 热力学与动力学课程节选

词组短语

under pressure 面临压力,在压力之下;受到压力

high pressure 高压,高气压;高度紧张

blood pressure n. 血压

low pressure 低气压;松懈

pressure drop 压力下降,压强下降

hydraulic pressure [机]液压;水压

pressure vessel 压力容器

high blood pressure 高血压

water pressure 水压力

air pressure 气压;风压

under the pressure of 在…压力下

negative pressure [物]负压;[计]负压力

atmospheric pressure 大气压力,大气压强

gas pressure 气压;气体压力;煤气压力

pressure difference 压力差;差压;压力补偿器;气压梯度

pressure water 加压水

pressure control 压力控制

pressure gradient 气压梯度

differential pressure [物]压差

static pressure 静压

  更多收起词组短语
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