pian
US /piˈɑːn/
UK /piˈɒn/
名詞
π介子
a subatomic particle, specifically a meson, that is involved in strong nuclear interactions
範例:
•
Physicists study the properties of pions in particle accelerators.
物理學家在粒子加速器中研究π介子的性質。
•
The decay of a pion can produce muons and neutrinos.
π介子的衰變可以產生μ子和中微子。