| 释义 |
sigma hyperonn.（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
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