锕铀

The transuranic elements especially the minor actinides in spent fuel represent potential environmental radiotoxicity hazard in the long term.

核电站乏燃料中超铀核素，特别是其中的少数锕系核素（Minor Actinides，简称MA），对环境具有潜在长期放射性危害性。

The present project intends to develop a new compound only containing CHON, which can extract U, Pu and the minor actinides together form the acidic media to integrate the reprocessing.

本课题旨在寻找一种新的只含CHON的化合物，能够从酸性介质中同时萃取铀、钚和次锕系元素，实现后处理一体化。

The natural series are the thorium series, the uranium series, and the actinium series.

天然的放射性系是钍系、铀系和锕系。

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。

The isotope of uranium with mass number235,fissionable with slow neutron s.

锕铀铀的同位素，原子质量数为235，与慢中子发生裂变

The concentration of neptunium and plutonium is extremely low in environmental samples. Additionally such samples have a complex matrix composition, which is to be taken into account for a proper analysis.

环境样品基体复杂，铀、镎和钚等锕系元素含量非常低，在复杂的生态条件下，这些核素常常具有复杂多变的化学形态，要准确测定其含量，必须要有灵敏可靠的检测方法。

Conventional radiochemical methods such as alpha spectrometry, neutron activation analysis, liquid scintillation system, fission track and gamma spectrometry for the quantitative determination of neptunium and plutonium often require complicated and time-consuming sample preparation and separation procedures.

研究环境中铀、镎、钚等长寿命放射性核素的精密测定，对保护公众安全和保护环境，对了解核设施的历史操作情况和现状，都具有重要意义。环境样品基体复杂，铀、镎和钚等锕系元素含量非常低，在复杂的生态条件下，这些核素常常具有复杂多变的化学形态，要准确测定其含量，必须要有灵敏可靠的检测方法。

A member of the actinide series of transition elements, it is the most important transuranium element because of its use in certain types of nuclear reactors and in nuclear weapons.

锕系过渡元素及其化合物，是最重要的超铀元素，用作核反应堆燃料和核子武器装料。

A member of the actinide series of transition elements, it is the most important transuranium element because of its use in certain types of nuclear reactors and in nuclear weapon s.

锕系过渡元素及其化合物，是最重要的超铀元素，用作核反应堆燃料和核子武器装料。

"Uranium Chemical element of the actinide series (with many transition element properties), chemical symbol U, atomic number 92. A dense, hard, silvery white metal that tarnishes in air,"

铀：周期表IIIb族锕系放射性化学元素，化学符号U，原子序数92，铀是致密的银白色金属，其硬度不足以刻划玻璃，于空气中会失去光泽。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。