Americans Venkatraman Ramakrishnan and Thomas Steitz and Ada Yonath from Israel were all instrumental in showing how proteins are made at the atomic level.

VOA: standard.2009.10.07

It turns out that the antibonding orbital is a little bit higher from the atomic orbital level than the bonding orbital is lower.

这证明了,反键轨道,比原子轨道高,成键轨道比原子轨道第。

麻省理工公开课 - 固态化学导论课程节选

I would say with the aid of an energy level diagram explain the fact that helium is found as atomic gas and not molecular. How about this one?

我要说的是，在能级图的帮助下,可以解释氦气是单原子气体,而不是分子气体这一事实,那么这个呢？

麻省理工公开课 - 固态化学导论课程节选