beta particle
noun /ˈbiːtə pɑːtɪkl/
/ˈbeɪtə pɑːrtɪkl/
(also beta ray
(physics /ˈbiːtə reɪ/
/ˈbeɪtə reɪ/
)- a fast-moving electron that is produced when some radioactive substances decay (= start to break down)
* β 粒子;贝塔粒子 - the properties of beta particles
β粒子的性质 - beta particle emission
β粒子发射
- the properties of beta particles