The air pressure in a plane during flight is lower than at sea level.

VOA: special.2009.07.14

Another way to represent a point in a plane is I've got a radius and I've got an angle from the x-axis, right, and that's a standard thing you might do.

平面上面的点的方法,也就是极坐标,上面那种方法其实是，如果你们喜欢我这么说的话,笛卡尔坐标表示法。

麻省理工公开课 - 计算机科学及编程导论课程节选

to be killed in a plane accident this weekend and there was a guest lecturer for you on Tuesday there'll be somebody alive lecturing to you.

我周末死于空难,而下星期二又有客座教授的话,就会有人活着给你们上课。

耶鲁公开课 - 死亡课程节选

The election date was moved up after Poland's president, Lech Kaczynski, was killed along with 95 others in a plane crash on April 10th near the Russian town,Smolensk.

VOA: standard.2010.06.17

That means, if you are going in a plane and you throw something up in the air, it seems to be going up and down to you.

也就是说,如果你在飞机中,你向空中扔出一物体,它也许会相对于你上下运动

耶鲁公开课 - 基础物理课程节选

Kaczynski is running in the place of his twin brother, the late President Lech Kaczynski, who was killed in April along with his wife Maria and 94 others in a plane crash near Smolensk,Russia.

VOA: standard.2010.07.03

So even though we see a nodal plane down the center, I just want to really point out that it's only when we have a nodal plane in the internuclear or the bond axis that we're calling that a pi orbital.

虽然在中间有个节面，我想要指出的是,只有节面在核间轴,或者键轴上时,我们才叫它π轨道。

麻省理工公开课 - 化学原理课程节选

Poland's speaker of parliament, Bronislaw Komorowski, became the country's interim head of state Saturday after Polish radio adjusted its regular programming to announce that President Lech Kaczynski and his wife Maria were among those killed in a plane crash in Western Russia.

VOA: standard.2010.04.10

And just to give you a sense, if you do a cross-cut of this, you cannot show it from this angle, but it should really be sort of a dumbbell shape with the nodal plane in between the two nuclei.

告诉你们这些就是给你们点概念，假如你们把他横切切开，不能从角度上展示，但它还是会保留几分哑铃的形态,以及在两核之间的节面。

麻省理工公开课 - 固态化学导论课程节选

Buddy Holly was killed in the crash of a small plane while on a singing tour in the Midwest.

VOA: special.2009.04.06

Particle's moving in a plane.

物体在平面内运动

耶鲁公开课 - 基础物理课程节选

In another example, pilot Edith Foltz Stearns was flying a plane to a military base in Scotland during World War Two.

VOA: special.2010.02.24

And so it has what? In contrast to the sigma, it has a nodal plane containing both nuclei.

这是什么，和sigma相反，它是包覆在核上的平面电子云，有一个界面。

麻省理工公开课 - 固态化学导论课程节选

You could be placed in medical isolation if someone you traveled with on a plane is suspected of having swine flu.

VOA: special.2009.07.14

Here, we are not talking about a single number, but a displacement in the plane.

我们现在不是在讨论数字,而是平面上的位移

耶鲁公开课 - 基础物理课程节选

In nineteen twenty-eight, he got a job flying the plane that belonged to a rich oil producer from Oklahoma.

VOA: special.2009.03.18

And when we look at this, it's actually split by what's called a nodal plane, which is pointed out in light orange here on this picture, but what we just mean is that there is this whole plane that separates the two lobes where there is absolutely no electron density.

我们来看这里，实际上它被一个节面分开，在这图里用淡黄色表示，这意味着这个分开,两个叶瓣的平面上,是完全没有电子密度的。

麻省理工公开课 - 化学原理课程节选

It began in April of nineteen ninety-four after a plane carrying the presidents of Rwanda and Burundi, both Hutus,was shot down.

VOA: special.2009.03.09

So that you take every sodium and you count all of its nearest neighbors, next nearest neighbors, next next nearest neighbors, not only on a line but in the plane and above and below in all three dimensions and go through that calculation, it is even more negative.

你考虑到每一个钠原子,你要考虑到它最近的原子，第二近的原子，第三近的原子，不是在一条线而是在一个面上,以及面上与面下的三维空间,再完成计算，这将会更负。

麻省理工公开课 - 固态化学导论课程节选

A voice next to her in the plane called out to warn her about a dangerous hill nearby.

VOA: special.2010.02.24

When you have a velocity in the moving plane frame and you want to find the velocity on the ground, you should add to every object in the plane the velocity of the plane with respect to the ground.

当你在运动的飞机上运动,然后你想找到相对于地面的速度,你就应该给每个物体加上,飞机相对于地面的速度

耶鲁公开课 - 基础物理课程节选

On Friday, at an airport in Vienna,Austria, an American plane and a Russian plane landed, parked side by side and exchanged occupants.

VOA: special.2010.07.10

So, if we say that in this entire plane we have zero probability of finding a p electron anywhere in the plane, the plane goes directly through the nucleus in every case but a p orbital, so what we can also say is that there is zero probability of finding a p electron at the nucleus.

而只要是ｐ轨道,这个平面都直接，穿过原子核，那么我们,可以说在原子核上,找到一个ｐ电子的概率为零。

麻省理工公开课 - 化学原理课程节选

On January 15th, the engines of a US Airways plane lost power shortly after takeoff from LaGuardia Airport in New York City.

VOA: special.2009.01.30

But in sigma orbitals, you have no nodal planes along the bond axis, so if we had a nodal plane here, we'd see an area where the wave function was equal to zero.

但在sigma轨道里，沿着轴向是没有节点平面的，如果我们有个节点，我们就会看到某个地方波函数等于0。

麻省理工公开课 - 化学原理课程节选

The pilot spent fifty hours in a simulator -- a copy of the plane on the ground -- preparing for his ten-minute flight.

VOA: special.2010.07.07

Then, I gave you one other very important example of a particle moving in the x-y plane.

下面我再拿一个重要的例子,质点在 x-y 平面内的运动

耶鲁公开课 - 基础物理课程节选

And he was in a military plane overhead as Allied forces stormed the beach at Normandy,France.

VOA: special.2009.08.16

And that's the following. Let's take a particle that is moving in the x-y plane, so that at one instance-- sorry, let me change this graph-- is here--oh, this is bad.

接下来,我们来看一个物体,在 x-y 平面内运动,在这个例子中,对不起,我要重画一下这个图,在这里,这画得不好

耶鲁公开课 - 基础物理课程节选

And when the plane landed, Amelia Earhart had a new goal in life.

VOA: special.2010.05.26