It can take several hours before the gas disappears.

VOA: special.2010.02.02

And then I am going to take sodium gas and I am going to make this into sodium gas plus electron.

接下来，将气态的钠,转化为,带正电的气态钠。

麻省理工公开课 - 固态化学导论课程节选

If gas is expensive, then we can't take a road trip.

如果汽油很贵的话，我们就没法开车旅行。

It depends on 实战 - SpeakingMax英语口语达人

I could take an unknown gas and put it in and measure it and then say, wow, those are the lines that are characteristic of sodium.

我取一种未知气体，把它放到管里,然后检测它，哇，这些线是钠的特征。

麻省理工公开课 - 固态化学导论课程节选

OK, so let's take our Van der Waal's gas.

好的，让我们看看范德瓦尔斯气体。

麻省理工公开课 - 热力学与动力学课程节选

These gas ions, if you take gas ions, these gas ions, if you take gas ions, gas ions of opposite charge will necessarily agglomerate without limit.

这些气态离子，如果你得到气态离子的话，如果你得到这些气态离子，具有相反电荷的气态离子,将必然会无限地聚集。

麻省理工公开课 - 固态化学导论课程节选

So, for example, in an electrochemical cell, it would be possible to take the sodium ion, give back its electron, and convert it into a metallic sodium, take the chloride ion, remove its electron, and restore chlorine gas.

所以，例如一个电化学的电池，它可能带有钠离子，让它得到电子，把它变成金属钠，得到氯离子，让它失去电子，作为氯气储存。

麻省理工公开课 - 固态化学导论课程节选

Let's just take hydrogen and nitrogen in the gas phase and form ammonia.

我们利用氢气和氮气,合成氨。

麻省理工公开课 - 热力学与动力学课程节选

Because only atomic hydrogen has that set of lines which means I could then take the spectra of gas phase species and use that information to identify.

我在这抬头看看然后离开，那就是氢原子,那就意味着,我可以测定,气相种类的光谱并且运用那个信息来鉴定。

麻省理工公开课 - 固态化学导论课程节选

But now, so this is where the refrigeration comes in. So if you take a gas, and you're below the inversion temperature and you make it go through this irreversible process, the gas comes out colder from that side than that side.

这就是冰箱的原理,如果在低于转变温度,的情况下我们将气体经过,这个不可逆过程,气体出来的温度将比这边低。

麻省理工公开课 - 热力学与动力学课程节选

Let's build this up. Let's see where this comes from, where these parameters a and b comes from. So, the first thing we're going to do is we're going to take our gas in our box, let's build a box full of gases here.

参数a和b有什么含义,首先，假设研究的气体,都在一个容器里,容器里充满了气体,这些是气体分子。

麻省理工公开课 - 热力学与动力学课程节选

You take your room temperature liquid helium and you cool it with liquid nitrogen to 77 degrees Kelvin, the new, you're not quite there yet 77k unfortunately right? Then you take hydrogen you cool it would liquid nitrogen to 77, then you can use your hydrogen gas.

首先要有常温的氦气,拿液氮把它冷却到77k，那个新来的7,你不坐在那儿，对吧？,然后用液氮把氢气降温到,然后就可以使用这个氢气了，想要用氢气来做焦耳-汤姆孙实验。

麻省理工公开课 - 热力学与动力学课程节选