pion 的定义
Physics.
- the first meson to be discovered: it has spin 0 and may be positively or negatively charged or neutral; charged pions decay into a muon and a neutrino or antineutrino. Symbol: π
更多pion例句
- Specifically, the proton morphs into a neutron and a pion made of one up quark and one down antiquark.
- The pion saplings, which the dancers also pretended to swallow, had no deceptive arrangement.
- In reality, each boy is an unpaid pion, a watchdog whose vigilance never relaxes.
- Pion; A certaine great, round, and Bulbus-rooted flower, of one whole colour.
- Close at hand was a pion tree, which spread out low-growing branches all about.
- Both the pion and the camass are largely utilized even at the present day for food by the Indians.