These particle energies are usually measured in units called electron volts.

这些粒子能量通常以称为电子伏特的单位测量。

In Rutherford's experiment, the alpha-particles had energies of millions of electron volts.

在卢瑟福的实验中，α粒子具有数百万电子伏特的能量。

The energy that an electron gains from an electric field of one volt is what is known as an electron volt.

电子从一伏特电场中获得的能量称为电子伏特。

More recently, we have learned how to use electromagnetic fields to give particles energies of at first millions and then thousands of millions of electron volts.

最近，我们学会了如何使用电磁场为粒子提供最初数百万电子伏特和数亿电子伏特的能量。