任何时候如果你有两个原子成键，键轴就是它们成键的方向。

So any time you have two atoms bonding, the bond axis is just the axis that they're bonding along.

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如果我们考虑,两个碳原子之间的z成键轴，我们可以画出sp杂化轨道的交叠，我们也可以画出和氢原子的成键。

So, if we think about this z bonding axis between the two carbon atoms, we can picture overlap of those s p hybrid orbitals, and then we can also picture bonding to hydrogen.

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以实现输入信号成比例的输出轴的位置控制。

And realize the proportional input signal of the output shaft's position control.

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So any time you have two atoms bonding, the bond axis is just the axis that they're bonding along.

任何时候如果你有两个原子成键，键轴就是它们成键的方向。

麻省理工公开课 - 化学原理课程节选

px So we're talking about pi carbon 2 p x, 2px because it's the x axes combining to carbon 2 p x.

我们讨论的是π碳，因为它在x轴结合成碳。

麻省理工公开课 - 化学原理课程节选

And the convention is that when two atoms bond, they bond along the z-axis.

我们的惯例是，两个轨道成键，键轴为Z轴。

麻省理工公开课 - 固态化学导论课程节选