So these devices, when I was a youngster, were colloquially known as "atom smashers", because they have the capacity to actually break these and have them reform.

这些设备，当我还年轻的时候，它们在口语中被叫做核粒子加速器，因为它们有能力,将这些破碎并重新形成。

麻省理工公开课 - 固态化学导论课程节选

Alpha particles are these helium nuclei, and they are the result of radioactive decay.

阿尔法粒子是氦核，它们是放射性衰变的产物。

麻省理工公开课 - 固态化学导论课程节选

And there he was able to identify the alpha particle as the helium nucleus.

他证实了,阿尔法粒子就是氦核。

麻省理工公开课 - 固态化学导论课程节选