actinium

A radioactive element of the alkali-metal group discovered as a disintegration product of actinium.

【化】镧系（即稀土元素）一种碱金属属的放射性元素，是锕瓦解的产物。

Measurement of actinium series radionuclides in deep-sea sediment core using γ spectrometry

深海沉积物岩心锕放射系核素的γ谱测定

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

A series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium.

15个从锕到铹的原子量递增的放射性元素。

The extraction mechanism and separation process of lanthanum and actinium were studied in HDEHP ( kerosene )-HNO 3 system.

研究了在HNO_ 3体系中,P_ ( 204 ) 萃取La和 Ac的 机理及影响La, Ac萃取分离因素,给出了La, Ac分配的数学模型.

Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 ( actinium ) through 103 ( lawrencium ).

锕类任何化学性质相似, 原子序数在89 ( 锕 ) 与103 ( 铹 ) 之间变化的放射性元素.

The extraction mechanism and separation process of lanthanum and actinium were studied in HDEHP ( kerosene ) NO 3 system.

本文研究了在HNO_3体系中,P_ ( 204 ) 萃取La和 Ac的 机理及影响La, Ac萃 取分离因素,给出了La, Ac分配的数学摸型.