如果我们考虑我们所做的去，实际写出电子构型，我们只是写出我们看到的能级，或者是轨道近似就可以了。

So if we think about what we would do to actually write out this configuration, we just write the energy levels that we see here or the orbital approximations.

youdao

这意味着那些星球要与我们的家园有着近似的大小，并且在一条距离合适的轨道上环绕母星运行，而这个距离要使得水能够以液态的、能孕育生命的形式存在。

That meant they'd have to be about the same size as our home world, orbiting their parent star at about the right distance for water to exist in liquid, life-nurturing form.

youdao

这里，△r应该是近似等于。。。,它的方向是轨道的切线方向。

And now, delta r should be essentially roughly equal to, well, its direction will be tangent to the trajectory.

youdao

So if we think about what we would do to actually write out this configuration, we just write the energy levels that we see here or the orbital approximations.

如果我们考虑我们所做的去,实际写出电子构型，我们只是写出我们看到的能级,或者是轨道近似就可以了。

麻省理工公开课 - 化学原理课程节选

So let's compare what some of the similarities and differences are between hydrogen atom orbitals, which we spent a lot of time studying, and now these one electron orbital approximations for these multi-electron atoms.

很长时间的氢原子轨道和,现在多电子原子中,的单个电子轨道近似，我们可以对比，它们之间,的相似性和不同。

麻省理工公开课 - 化学原理课程节选

So, let's write this one electron orbital approximation for berylium, that sounds like a pretty complicated question, but hopefully we know that it's not at all, 1s22s2 it's just 1 s 2, and then 2 s 2.

所以让我们写出,铍的单电子轨道近似，那听起来像是一个更为复杂的问题，但是希望我们知道它一点都不是，它仅仅是。

麻省理工公开课 - 化学原理课程节选