Assistant professor is the first job on this path.
VOA: special.2009.04.09
And the path that I'm describing then, let's assume that we're raising the temperature up is this path right here.
经过一个,等压过程,路径就是这样。
so I'm heating up the system in this path here, and then to connect the 2 endpoints here, a constant temperature path.
需要再用,一个等温过程,这两个状态。
"I will say that and we will continue this path, whatever measures it might be it will be the least affecting the well being of the people of the two countries."
VOA: standard.2009.11.11
I start off, either I take this path and carry on, or I take that path and carry on, but each box, if you like, gets touched exactly once.
程序开始后,或者采取这条路径然后继续,或者采取那条路径然后继续,但是每个图形,如果你喜欢这么说的话。
And they had to make this move without the equipment in the command module that kept the spacecraft on its flight path.
VOA: special.2009.07.22
Depending on what you call external and internal environment, this path that I'm tracing here, deep within your digestive system, is really directly connected to the outside world through both ends.
基于你们所谓的外环境和内环境,我在这里我所指的消化系统内部通路,它的两端确实与外界环境直接相通
"That means protecting the rights of Egypt's citizens, lifting the emergency law, revising the constitution and other laws to make this change irreversible and laying out a clear path to elections that are fair and free.
VOA: special.2011.02.12
My path in life was fundamentally altered by just a handful of courses at this place and this was in fact one of them.
在哈佛所学的一些课程,从根本上改变了我的人生道路,这门课就是其中之一。
"This is not a sign of weakness, but rather one more step on a clearly charted path to Chrysler's revival.
VOA: standard.2009.04.30
And, so, this is an entry path to see this, to see this thing brought down as a symbol of centralized oppression.
这正是观察集权压制,走向末路的一个切入点
"But this is the path to guarantee that the gravest scenarios of the last time will not repeat.
VOA: standard.2010.06.24
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。
"We have faced an enemy who do not want to fight us force-on-force, rather they wanted to lay improvised explosive devices to halt us in our path and this summer total of 1,800 Improvised explosive devices laid in our path, so we have had to adapt quickly."
VOA: standard.2009.10.12
So, the first obvious one is to take V1 to V2 first with p constant. So take this path here.
从初态到末态可以有无数种路径2,甚至像这样,我们只研究两种。
"This conference gives us all an opportunity to reignite its path to progress by working as a team with Haiti at the helm to advance a comprehensive, long-term strategy for Haiti's growth, by coordinating hemispheric and international efforts, by targeting clear goals, by setting benchmarks to gauge our progress, and deploying our diverse skills and resources efficiently and effectively."
VOA: standard.2009.04.14
And our job is to find out what is the mathematical description of this path, this line in p-V's case that connects these two point.
我们的任务,就是找出,描述这条曲线的方程。
So I could get to that object either through this path or through that path, it didn't matter which path I use to modify it, I would see it when I looked at the other. Yes.
另外一条绑定获得这个对象,无论我通过哪个绑定来修改它,我都能在两个绑定中都看到做的改变,是这样的。
Why? Because this path is an adiabatic path.
为什么?因为这条路径。
So, this path right here from this top red path is an isobaric process.
所以上面这条红色的路径,就是个等压过程。
So, this observation is equivalent to saying that there must be something that is path independent.
这个表述相当于说,一定存在某个物理量是与路径无关的。
Now remember, we went through before how it's a state function but to calculate it, you'd need to find a reversible path, along which you can figure this out.
请记住,我们不需要知道它是怎样的一个态函数,只计算就可以了,你需要找到一条可逆路径,沿着这条路径就能算得这个结果。
And so this is one path, constant volume.
因此这是一条。
And the first law says, well heat and work are different forms of energy, and we can add them, and the path dependence of these two things is somehow cancelled in the fact that we have this internal energy.
热力学第一定律说,热和功是能量的不同表现形式,我们可以把它们加起来,它们与路径相关的部分相互抵消,我们就有了内能。
And so this is a constant volume path then.
因此这是个等体过程。
OK. Note, by the way, if I chase through each possible path, like there's some IFs in here, if there's some places to go, at least in this piece of code, every possible path through this code ends in a return. And that's a good programming discipline, to make sure that happens.
注意一下,如果我跟进每一条可能的路径,像是这里的,起码在这段代码中就有很多走向,这段代码中的每一条可能路径,在结尾都会返回一个值,这就是一条很好的编程定律,请确保这样做。
So that's our work in this path and heat.
这就是这个过程中的功和热。
Cv Cv is going to be related to this path.
这个。
I take V1 to V2 first, keeping the pressure constant at p1, then I take p1 to p2 keeping the volume constant V2 at V2. Let's call this path 1.
容易计算的路径,第一条路径,是首先保持压强不变,体积从V1压缩到。
So path number 1 went from i, f let's call this path up here. went to f, and this is how much energy change there was.
从i出发,经过路径1到达,能量的变化是这么多。
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