C.D.C.officials say U-V rays can damage your skin in as little as fifteen minutes.

VOA: special.2010.07.06

v du/dV under constant temperature. du/dT v under constant volume. You use the Joule expansion to find these quantities.

像偏u偏v，恒温下的偏u偏,恒容下的偏u偏,你们知道怎么运用焦耳定律。

麻省理工公开课 - 热力学与动力学课程节选

and the same for favour, they spell f-a-v-o-r, we put u in it,

同样地，对于发烧这个单词，他们拼写成f-a-v-o-r，我们要加一个u在里面，

美式英语和英式英语 - SpeakingMax英语口语达人

Doctors also suggest avoiding tanning salons and U-V tanning beds to prevent skin cancer.

VOA: special.2010.07.06

Now, for an ideal gas, du/dV under =0 constant temperature is equal to zero.

对于理想气体，温度一定,时偏U偏V等于零。

麻省理工公开课 - 热力学与动力学课程节选

During the summer, the most dangerous period for U-V rays in the United States mainland is between the hours of ten in the morning and four in the afternoon.

VOA: special.2010.07.06

In the case of France again, they are the work of a brilliant military engineer called Vauban, v-a-u-b-a-n.

例如法国,在佩皮尼昂 里尔 蒙梅迪等地方,这样的要塞城镇随处可见

耶鲁公开课 - 欧洲文明课程节选

Tanning beds can also produce high levels of U-V radiation.

VOA: special.2010.07.06

If you think of two towns down here, Brive,b-r-i-v-e,famous for its rugby, and Tulle,t-u-l-l-e,which is a capital.

如果你可以想起来这儿的两个城镇,布瑞福,b-r-i-v-e,以英式橄榄球运动而负有盛名,图勒,t-u-l-l-e,是一个省的首府

耶鲁公开课 - 1871年后的法国课程节选

Choose to wear U-V ray-blocking sunglasses and sunscreen products.

VOA: special.2010.07.06

du/dV under constant temperature was equal to zero for an ideal gas. And by analogy, we expect the same thing to be true here, because enthalpy and energy have all this analogy going on here. So let's look at an ideal gas.

偏U偏V在恒温下等于零,可以类比，我们希望在这里也一样，因为焓和能量有很强的类比性，让我们看看理想气体,【理想气体】

麻省理工公开课 - 热力学与动力学课程节选

Ultraviolet,also called U-V,rays cause the skin to burn.

VOA: special.2010.07.06

This depends on the path. It tells you right here the path is constant pressure. These don't depend on the path, right. V doesn't care how you v get there. u doesn't care how you get there.

这由变化的具体路径决定,这个小脚标表明过程是恒压的,这些量都与具体路径无关,即不管是通过什么路径使得体积变化为Δ

麻省理工公开课 - 热力学与动力学课程节选

What some call the V-word - Vietnam is increasingly heard in the growing debate over U.S.involvement in Afghanistan.

VOA: standard.2009.09.09

Enthalpy is just u plus p V.

你想要的任何地方。

麻省理工公开课 - 热力学与动力学课程节选

"The U.S.data should remind us that this recovery is not likely to be V-shaped It seems to me that we are going to see rising unemployment for a long time yet,"

VOA: standard.2009.08.05

So dS for u and V fixed is greater than zero.

所以当内能u和体积V固定时，dS大于零。

麻省理工公开课 - 热力学与动力学课程节选

H=qp The u plus p V. Delta H is equal to q V.

括号里面的就是H，等于u+pv，Δ

麻省理工公开课 - 热力学与动力学课程节选

And look at, for example, the V dependence of u.

考察u对V的。

麻省理工公开课 - 热力学与动力学课程节选

OK, so for a constant volume process, du we can write du, partial derivative of dT u with respect to T at constant V, dT, dv plus partial derivative of u at constant V, dV.

好，对于一个恒定体积的过程，我们可以写出,等于偏u偏T，V不变，加上偏u偏V，T不变。

麻省理工公开课 - 热力学与动力学课程节选

In other words, u is a function of T and V.

话句话说，u是T和V的函数。

麻省理工公开课 - 热力学与动力学课程节选

Now, before, of course, in the first part of the class u we started out looking at u H and then looking at H not as functions of S and V or S and p, but as functions of temperature, mostly.

现在，在本课的前一部分,我们首先讨论了,然后讨论了,这两个量并未写成S和V或者S和p的函数，而是写成了温度的函数。

麻省理工公开课 - 热力学与动力学课程节选

du/dT constant pressure is the direct derivative with respect to temperature here, which is sitting by itself under constant volume keeping this constant but there is temperature sitting right here too.

偏U偏T，p恒定是对,温度的直接微分，而它本身对体积不变,保持它不变，但是这里也有一个温度,这就是偏U偏V，T恒定。

麻省理工公开课 - 热力学与动力学课程节选