But others say he wrote this way because he was left-handed and writing backwards was easier and helped keep the ink from smearing.

VOA: special.2010.09.15

It is going to smear in this manner and will look something like this where I have dumbbell shapes with smearing.

这带有一点拖尾效应,看起来像某个东西,带一点拖尾效应的哑铃。

麻省理工公开课 - 固态化学导论课程节选

And they are smearing this way.

这样他们有重叠了。

麻省理工公开课 - 固态化学导论课程节选

First of all, this is the two s orbitals in hydrogen, 1s plus 1s smearing to give us this sigma molecular orbital.

首先，这是氢气中的两个s轨道，1s与1s轨道重叠,产生sigma分子轨道。

麻省理工公开课 - 固态化学导论课程节选

And this is the lateral smearing. They call it x.

这是侧面重叠，这个我们叫做X轨道。

麻省理工公开课 - 固态化学导论课程节选