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

Our plane leaves at 10 a.m.

我们的飞机10点起飞。

I'd better 实战 - SpeakingMax英语口语达人

So, the wave function at all of these points in this plane is equal to zero, so therefore, also the wave function squared is going to be equal to zero.

因此这里的,波函数平方也等于零，如果我们说在这整个平面上,任何地方找到一个ｐ电子的概率都是零。

麻省理工公开课 - 化学原理课程节选

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

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

VOA: special.2009.07.14

The reason that it's sigma is if you look at the bonding axis here, is that there is no nodal plane along the bonding axis.

它是sigma键的原因是,因为如果你看键轴，上面是没有节面的。

麻省理工公开课 - 化学原理课程节选

At one point, her plane dropped suddenly nine hundred meters.

VOA: special.2010.05.26

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

Many also acknowledge they are concerned about job losses at factories in their districts that produce parts for the plane.

VOA: standard.2009.07.21

So pi bonds have electron density both above and below the bond axis, but they actually have a nodal plane at this z, this bond axis here.

键在键轴之上,和之下都有电子密度，但它们在z方向有节面，这是键轴的地方。

麻省理工公开课 - 化学原理课程节选

At the site of the crash, investigators spent hours combing through the mangled remains of the aircraft to find the plane's black box, flight-data recorder.

VOA: standard.2010.05.23

Somehow,somewhere,security officials did not pick up on the information at their disposal that allowed an individual on a security watch list onto a plane bound for the U.S.

VOA: standard.2009.12.28

Grzegorz Makowski of the Warsaw-based Institute of Public Affairs explains this surge of support for Kaczynski, saying he thinks the plane crash at Smolensk mobilized more conservative voters.

VOA: standard.2010.07.03