Deflection up and deflection down indicating that there was something strange that had yet to be accounted for.

发生了偏离,这就说明还有一些奇特的现象,需要我们去解释。

麻省理工公开课 - 固态化学导论课程节选

It is a free electron so there is no potential energy to be accounted for.

对于自由电子,因此没有什么势能。

麻省理工公开课 - 固态化学导论课程节选