| 释义 |
beta decay
noun uncountable specialized
■the process in which a neutron (= part with no electrical charge inside an atom) breaks up into a proton (= part with a positive electrical charge) and an electron (= part with a negative electrical charge) ß衰变（一种放射性衰变过程，原子中不带电荷的中子分裂为一个带一正电荷的质子和一个带一负电荷的电子） |