We also talk to a NASA expert about the discovery of methane gas on Mars.

VOA: special.2009.12.30

We talked about this reaction here where we had chloride ion in the gas phase plus sodium ion in the gas phase.

我们在讨论这一个反应,我们有气相的氯原子,与气相的钠原子接触。

麻省理工公开课 - 固态化学导论课程节选

I'm about to run out of gas.

我快要没汽油了。

I'm about to 课堂 - SpeakingMax英语口语达人

Natural gas provides Americans with about one-fourth of their energy.

VOA: special.2009.10.23

The last time you saw that for an ideal gas, the energy only cared about the temperature.

上次你们知道了，理想气体的能量只与温度有关。

麻省理工公开课 - 热力学与动力学课程节选

Manure from about 1,000 cows goes in one end and then, controlled decomposition yields methane gas at the other.

VOA: standard.2010.02.23

I would say with the aid of an energy level diagram explain the fact that helium is found as atomic gas and not molecular. How about this one?

我要说的是，在能级图的帮助下,可以解释氦气是单原子气体,而不是分子气体这一事实,那么这个呢？

麻省理工公开课 - 固态化学导论课程节选

They cite Russia's brief war with Georgia and Russia's confrontations with Ukraine over natural gas supplies last year as reasons to remain skeptical about the Kremlin's intentions.

VOA: standard.2009.09.17

All right, next time we're going to talk about a much better scale, which is the ideal gas thermometer and how we get to the Kelvin scale.

好，下次我们,会讲一种好得多的温标，关于理想气体温度计,和开氏温标的导出。

麻省理工公开课 - 热力学与动力学课程节选

Even with poor gas mileage on most RV units, these vagabonds can travel for about one-fifth what others pay who fly, buy meals in restaurants, and stay in motels.

VOA: standard.2010.03.01

Now let's talk about some simple observations on isothermal gas expansions.

接下来我们讨论几条,关于绝热膨胀的性质。

麻省理工公开课 - 热力学与动力学课程节选

"When,in the context of Iran, you talk about the rise in the price of gas, you will see the impact of that on everything else, and I mean everything: not only transportation, but also production or presentation of tomatoes in the market,bread.

VOA: standard.2010.07.23

It means that the molecules or the atoms and the gas don't know about each other.

气体分子本身的体积,可以忽略不计。

麻省理工公开课 - 热力学与动力学课程节选

All the things we are talking about here are with reference to the gas phase.

所有我们在这里谈到的,都和气相有关。

麻省理工公开课 - 固态化学导论课程节选

So now, this equation here relates three state functions together: the pressure the volume, and the temperature. Now, if you remember, we said that if you had a substance, if you knew the number of moles and two properties, you knew everything about the gas.

压强，体积和温度,大家应该还记得,我们提过，只要知道气体的摩尔数,和任意两个状态函数,就可以推导出其他的状态函数，这样，我们可以把它改写成。

麻省理工公开课 - 热力学与动力学课程节选

So enthalpy, for an ideal gas, only cares about temperature.

只和温度有关，压力已经与不重要了，所以这里与p无关。

麻省理工公开课 - 热力学与动力学课程节选

See, up until now I have been talking about gas phase, single atoms, all this stuff.

看，只到现在我们已经讨论了气相，单原子，这些东西。

麻省理工公开课 - 固态化学导论课程节选