释义 |
sigma hyperon【化】 σ超子 sigma hyperon sigma hyperon n.(名词)Any of three unstable subatomic particles in the baryon family, having a mass of 2,328 to 2,343 times that of the electron and a positive, neutral, or negative elecric charge.See table at subatomic particle Σ超子:重子家族中三种不稳定的亚原子微粒中的任何一种,质量为电子的2,328到2,343倍,带正电、负电或不带电参见 subatomic particle |