And so this lower level is called a bonding orbital, and it is a bonding molecular orbital.
所以能级较低的轨道叫做成键轨道，这就是成键分子轨道。
So that's the idea of a bonding molecular orbital.
这就是成键分子轨道的概念。
So if we name this orbital, this is an anti-bonding molecular orbital So we had bonding and now we're talking about anti-bonding.
这是反键分子轨道，我们有了成键，现在我们讨论反键。
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