And it turns out that when you constructively have two p orbitals interfere, and when I say constructively, I mean they're both either positive or they're both the negative lobes, that's when you got bonding.

当两个ｐ轨道,相长干涉时，我说的相干相长，意思就是说它们要么都是,正的叶瓣要么都是负的叶瓣，这时就能成键。

麻省理工公开课 - 化学原理课程节选

And in terms of thinking about the phase of this p orbital, the phase is going to be positive anywhere where z is positive.

对于ｐ轨道的相位，在ｚ大于零的地方都是正的。

麻省理工公开课 - 化学原理课程节选

I'm pressing on the gas. So I expect that to be a positive number. The pressure is constant 0 p. The V goes from V1 to zero.

我们对气体加压,所以这应该是一个正数,压强是常数，p，V从V1变成。

麻省理工公开课 - 热力学与动力学课程节选

dT/dp is positive. dT/dp is positive.

偏T偏p是正数，好的这就是。

麻省理工公开课 - 热力学与动力学课程节选

JT dT/dp is positive, well that's mu JT.

偏T偏p就是μ

麻省理工公开课 - 热力学与动力学课程节选