以上来源于: WordNet
Both of these lobes together constitute a pi bond.
上下两片叶一起组成了一根 π 键。
Pi orbitals are a molecular orbital that have a nodal plane through the bond axis.
轨道是沿着键轴,有节面的分子轨道。
We're already using it up in this pi bond here, so that means we're limited to only two other spots on the molecule, so we have three.
我们已经把它用到这个π键里去了,所以这意味着,我们在分子里只剩下两个位置,所以一共是三个。
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