He only spoke briefly about the new U.S.plans for the region but he said President Obama's policies represent "positive change."

VOA: standard.2009.03.28

Now, we saw before, or really I should say we accepted before, that for an ideal gas, u was a function of temperature only.

我们已经看到,或者说我们已经接受这样一个事实，即理想气体的内能只和温度有关。

麻省理工公开课 - 热力学与动力学课程节选

PROFESSOR BAWENDI: So the question was, for an isothermal expansion, delta u does not change, therefore, The answer is that's true only for an ideal gas.

你的问题是，在等温过程中，内能是否，这只对理想气体成立。

麻省理工公开课 - 热力学与动力学课程节选

This is the only place in the country where officers of the U.S.Marine Corps are trained for war.

VOA: standard.2010.04.06

So that you could see that for the ideal gas, u would not be a function of volume, but only of temperature.

所以我们可以看到对理想气体，内能不依赖于体积，而仅仅是温度的函数。

麻省理工公开课 - 热力学与动力学课程节选

U.S.funding for AIDS programs has stayed the same, with only a slight increase of two percent.

VOA: standard.2010.07.17

So for an ideal gas, we saw that u was only a function of temperature.

对于理想气体，我们知道内能只是温度的函数。

麻省理工公开课 - 热力学与动力学课程节选

Iran says its uranium-enrichment program is designed only for electricity generating purposes, and has allowed U.N.inspectors to visit a previously secret processing facility near the city of Qom.

VOA: standard.2009.10.28

Therefore, from experiments, u is only a function of temperature for an ideal gas, H and therefore from these experiments, 0 we come out with delta H dH/dp is equal to zero.

因此，从实验可以得出,对于理想气体u只是温度的态函数，因此从这些实验中我们得到Δ,偏H偏p等于。

麻省理工公开课 - 热力学与动力学课程节选

The League hopes it can convince skeptics that a vote for a new climate law will be good not only for the U.S.economy but for the planet as well.

VOA: standard.2010.02.25

But here in Warsaw, people were waiting for only one thing -an assurance that despite scrapping Bush-era plans for an antiballistic missile shield, the U.S.had not turned its back on Central Europe.

VOA: standard.2009.10.22

U.S.officials say the self-described satellite launch would only be a cover for a test of a long-range missile, perhaps a more advanced version of the one North Korea fired eastward over Japan in 1998.

VOA: standard.2009.03.25

Allyn says U.S.troops so far are handling security only for their own operations including establishing facilities on shore near the town of Leogane, west of Port-au-Prince, where a Marine Expeditionary Unit began to arrive Tuesday morning.

VOA: standard.2010.01.19

She told U.N.delegates and women activists here that the harrowing testimony she heard only underscored for her the point that societies cannot reach their full potential if half the population, women and girls, are oppressed and subjugated.

VOA: standard.2009.09.25