Prime Minister Fischer and President Klaus have yet to decide who will be in charge of this and other events of the E.U.presidency.

VOA: standard.2009.05.11

So, an electron has a charge of negative e, we've written here and the nucleus has a charge of positive e.

我们写在这，原子核带正e的电荷,我们看到作用力。

麻省理工公开课 - 化学原理课程节选

If you look up really close, there is the elementary charge e.There is the mass of the electron.

如果你仔细找的话，会找到e表示的元电荷,也能找到电子的质量。

麻省理工公开课 - 固态化学导论课程节选