This is the analogy to the alpha particle.

这和阿尔法粒子类似。

Upon gaining two electrons the alpha particle becomes a helium atom.

粒子获得两个电子之后就变成了氦原子。

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。

So basically he's trying to put some atoms in the way of the alpha particle.

把一些原子，放在alpha粒子的路径上。

Aluminium can be transformed, by the capture of an alpha particle and the emission of a proton, into a stable silicon atom.

铝可以通过俘获。粒子、排出质子而被蜕变成一种稳定的硅原子。

A single alpha particle generates a track of from 30,000 to 70,000 positive and negative ions per cm, which may be polarized and moved about by ambient electric fields.

一个单个的阿尔法粒子能够产生每厘米30000到70000个正、负离子的踪迹，这些粒子可能受到周围电场的作用而极化或运动。

The first type discovered -- alpha decay -- is when a radioactive particle emits a Helium nucleus !

我们发现的第一种衰变方式——阿尔法衰变——是放射性粒子产生氦分子！

Shuttle Endeavour is set to launch April 19 with the $2 billion Alpha Magnetic Spectrometer particle detector.

奋进号航天飞机计划将于四月19号升空，携带价值20亿美元的阿尔法磁谱仪粒子探测器。

The study of cell biological character in the neoplastic transformation of immortalizational human fetal tracheal fibroblasts induced by alpha-particle irradiation.

粒子诱发人胎永生化气管成纤维细胞体外恶性转化细胞生物学特征研究。