So even though we see a nodal plane down the center, I just want to really point out that it's only when we have a nodal plane in the internuclear or the bond axis that we're calling that a pi orbital.

虽然在中间有个节面，我想要指出的是,只有节面在核间轴,或者键轴上时,我们才叫它π轨道。

麻省理工公开课 - 化学原理课程节选

Heck,he deserves to have his name on the board, Marsden So, Marsden concluded by his analysis that the radius of the nucleus, and this is Rutherford, by the way, coining this term.

见鬼，他的名字配写在黑板上，马斯登,马斯登根据分析得出,核的半径，这是卢瑟福，插一句，创造了这个术语。

麻省理工公开课 - 固态化学导论课程节选

And a sigma bond forms any time you have two orbitals coming together and interacting on that internuclear axis.

当你把两个轨道合在一起,并在核间轴上有相互作用时,就形成了sigma键。

麻省理工公开课 - 化学原理课程节选

In Canada you wait ten weeks for MRI s wrong with you, now a lot of things can happen in ten weeks and many of them are very bad.

在加拿大你得等上10个星期,核磁共振的工作人员,才能告诉你病因，to，find，out，what’,病情会在10周内变化,情况可能会很糟糕。

斯坦福公开课 - 经济学课程节选

Well I talked about it - earlier I've mentioned several times all the cells in my body, all the cells in your body have essentially the same genomic chromosomal DNA in their nucleus.

我之前有说过,我不只一次提到过,我体内的所有细胞,和你体内的所有细胞一样,核中的染色体基因组DNA本质上都相同

耶鲁公开课 - 生物医学工程探索课程节选

And so it has what? In contrast to the sigma, it has a nodal plane containing both nuclei.

这是什么，和sigma相反，它是包覆在核上的平面电子云，有一个界面。

麻省理工公开课 - 固态化学导论课程节选

Any time two orbitals come straight on together in that internuclear axis, you're going to have a sigma bond.

任何时候两个轨道,在核间轴上直接到一起，你就能得到sigma键。

麻省理工公开课 - 化学原理课程节选

And remember for this class, we always define z as the internuclear or the bond axis.

记住在我们的课堂上，我们总是把z方向定义为核间轴的方向。

麻省理工公开课 - 化学原理课程节选

The reason that it's a sigma bond is sp3 because the s p 3 hybrid orbital is directly interacting with the 1 s orbital of the hydrogen atom, and that's going to happen on the internuclear axis, they're just coming together.

它是sigma键的原因,是因为,杂化轨道直接和氢原子1s轨道相互作用，它们作用发生在核间轴上，它们会到一起。

麻省理工公开课 - 化学原理课程节选