1. Love, how happy phrase actinium. ! 爱,多麽美好旳字眼锕。!
2. a radioactive element of the alkali-metal group discovered as a disintegration product of actinium. 一种软质的银色金属元素,稀土属,没有稳定的同位素,作为铀的裂变产物以放射性状态被发现。
3. Either of two decay products of thorium, mesothorium I, an isotope of radium, or mesothorium II, an isotope of actinium. 钍的两种放射性生成物之一,即新钍号,它是镭的同位素,或新钍2号,它是锕的同位素。
英英解释
n.
1. a radioactive element of the actinide series; found in uranium ores