释义 |
乙种粒子yǐzhǒnglìzǐbeta particle (electron, esp. high speed electron emitted by radioactive nucleus)乙种粒子【理】beta particle乙种粒子[yǐ zhǒng lì zǐ] 某些放射性物质衰变时放射出来的高速运动的电子,带负电 beta particle; electron with negative electricity, ejected at high velocity from a radioactive nucleus undergoing beta decay亦 also 贝塔粒子 bèitǎ lìzǐ乙种粒子[物]beta particle |