| 释义 |
actinide/ˈæktinaid/n. (also 亦作 actinoid /ˈæktinɔid/) Chem. any of the series of 15 radioactive elements of increasing atomic number from actinium (no. 89) to lawrencium (no. 103) 【化】锕类(原子序数从 89 到 103 的任何一组 15 个放射性元素) [ACTINIUM + -IDE on the pattern of lanthanide] |