More powerful particle accelerators atom smashers, they used to call them have allowed physicists to learn ever more about the sub-atomic particles that are the basic building blocks of all matter.

VOA: standard.2010.03.05

So similarly, as we now move up only one more atom in the table, 3 so to an atomic number of three or lithium, now we're going from six variables all the way to nine variables.

类似地就像我们现在,移动到周期表中仅仅多一个电子的情况，移动到一个原子数为，或者锂元素,现在我们从6个变量到了9个变量。

麻省理工公开课 - 化学原理课程节选

We saw the Schr?dinger equation for atomic hydrogen, but you can write it for more complex systems.

我们看过原子氢的薛定谔方程，但其实我们能把他用在更复杂的体系。

麻省理工公开课 - 固态化学导论课程节选

Again, we're going to take the linear combination of those p atomic orbitals and make what are called pi or some more sigma molecular orbitals.

同样的，我们需要得到,原子p轨道的线性组合,然后组成我们所说的,π分子轨道或者sigma分子轨道。

麻省理工公开课 - 化学原理课程节选

Something I'll also point out as you see these dashed line that tell you where the individual molecular orbitals are arising from, as you get to higher and higher atomic numbers of molecules that you're making, it makes a lot more sense to look at a diagram when you draw these dotted lines in, because they can start to get a little bit confusing.

我要指出的是，你们看这些虚线,它们告诉你,每个分子轨道的起源是什么，当你的原子数,越来越高的时候，画出这些点线,使图更容易理解，因为现在开始变得有一点混乱了。

麻省理工公开课 - 化学原理课程节选

So we have two electrons in our bonding orbital, but because we use the same rules to fill up molecular orbitals as we do atomic orbitals, so the Pauli exclusion principle tells us we can't have more than two electrons per orbital, so we have to go up to our anti-bonding orbital here.

所以在成键轨道上有两个电子，但因为我们用了和原子轨道时,用的相同的规则，所以Pauli不相容原理告诉我们,一个轨道上不能有两个以上的电子，所以我们需要填充到反键轨道上去。

麻省理工公开课 - 化学原理课程节选