actinium信息详情
n.[化学]锕（元素符号Ac）
actinism───n.光化性，光化度；光化作用
vaccinium───越桔属
achenium───n.瘦果
actinia───n.海葵，海葵属
actiniae───n.海葵
actinian───海葵的；似海葵的
actinias───n.海葵，海葵属
actinic───adj.（光、照明）光化性的；光化引起的，与光化有关的；（辐射）产生光化作用的
actinide───n.[化学]锕类；锕系元素
There are three naturally occurring radioactive series - the thorium series, the actinium series, and the uranium series.───有三个天然存在的放射系列，即钍系、锕系和铀系。
All are radioactive and have similar properties to actinium.───这些元素都有放射性，而且性质与锕相似。
a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.───一种存在周期短的放射性金属元素，由铀形成，能分裂成锕然后分裂成铅。
Actinide: Any of the series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89-103).───锕系：周期表中从锕到铹（原子序数89~103）的十五个依次排列的一组化学元素。
Research Progress of New Extractant of Amide for Actinium Elements───萃取锕系元素的新型酰胺类萃取剂研究进展
The extraction mechanism and separation process of lanthanum and actinium were studied in HDEHP ( kerosene ) - HNO 3 system.