The current and speed PI regulator parameters are designed using the left half plane zero-pole cancellation method.

采用左半平面零极点相消的方法设计了电流及转速PI调节器的参数；

youdao

And so, in particular, if we set this equal to zero instead of approximately zero, it means we'll actually be moving on the tangent plane to the level set.

而且，特别地，如果我们令此函数为零，而不是近似为零，它意味着我们在水平集的切平面上移动。

youdao

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。

youdao

Remember this is our bond axis here, and you can see there is this area where the wave function is equal to zero all along that plane, that's a nodal plane.

记住这是我们的键轴，你可以看到在这些区域,波函数在这个面内全都是零，这是节点面。

麻省理工公开课 - 化学原理课程节选

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

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

Second place gets a free zero-gravity plane flight.

FORBES: Virgin's Top Frequent Flier Gets To Fly For Free - Into Space

Membership will make it much easier for British scientists to propose experiments and to get access to facilities like a zero-G plane, which generates short periods of weightlessness by flying a series of parabolas in the sky.

BBC: Britain attracted to microgravity

"The air marshals and the flight attendants have legitimate concerns, certainly, for their own safety, but the threat of taking over a plane with a small, sharp instrument is zero, " Hawley said.

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