英语语法分析

What is the nodal plane in this case?

这种情况下的节面在哪呢？

But keep in mind sigma orbitals have no nodal planes along the bond axis.

但记住sigma轨道沿着，键轴方向是没有节点的。

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。