Now let's think about this first pi bond, which will be above and below the bonding axis.

让我们先来看这个π键，它在键轴的上面和下面。

化学原理课程节选 : 麻省理工公开课

And what we see here is now when we're combining the p, we have our 2 p x and our 2 p y orbitals that are lower in energy, and then our pi anti-bonding orbitals that are higher in energy.

这里我们看到,当我们结合p轨道时，在低能处我们有,2px和2py轨道，π反键轨道在更高的能级处。

化学原理课程节选 : 麻省理工公开课