查询词典 uranium-actinium

In order to study the reaction kinetics of uranium with CO or CO 2,uranium samples of different forms are obturated in reaction vessels and then CO or CO 2 is filled in. Gases in vessels are analyzed at different storage time.

在一定温度下，将不同形态的铀样品密闭贮存在容器中并充入一定压力的高纯CO或CO2 气体，通过定期测量贮存容器中气体组成，初步研究了铀与CO或CO2 的反应动力学。

Avalon Rare Metals, for example, owns a rare-metals property at Thor Lake in the Northwest Territories. Ucore Uranium, based in Halifax, has a project in southeastern Alaska. VMS Ventures optioned a uranium and rare-earth property in Manitoba. Billingsley's company, Great West Mineral Group of Saskatoon, owns the Hoidas Lake project on the northern fringe of Saskatchewan.

例如，在西北地区托尔湖拥有稀有金属矿的阿瓦隆稀有金属公司；坐落于哈利法克斯，在阿拉斯加东南部有项目的铀核铀矿公司；握有曼尼托巴的铀矿和稀土矿购买权的VMS投资公司；还有比利斯利的公司，在萨斯喀彻温省西北边辉达斯湖有项目的大西部矿业集团公司。

Uranium weapons are armor-piercing munitions made of waste uranium-238, an extremely hard metal left in great quantities from the production of reactor fuel and nuclear weapons.

铀武器的穿甲弹药制造的废物铀-238 ，是一个非常硬的金属留在大批量从生产的反应堆燃料和核武器。

The Mo,U elements about normal geochemical method have a closely relationship with hidden uranium deposits. It has studied which methods is the most effective about this four methods through compare to drill material.After making compositive interpretation we can find this four method are effective on hidden uranium ore.We have the follow results: CR-39 track method and gama-ray spectrometer survey is better method than geochemical method.

最后通过这些单一方法实测测量结果与已知钻孔资料进行比较可以对该勘查方法的铀矿勘查效果进行评价；再从方法的单一研究到方法的综合研究，得出伽马能谱测量和固体径迹测量有效的结合，可以得到隐伏铀矿化的深部信息，而常规化探测量则可以有效划分近地表、深部铀矿化的区域。

Using many geoscientific methods, the formation mechanism and u ranium mmeralization of the Mesozoic-Cenozoic fossil hydrothermal sys tems, Southeast China, have been discussed for the first time through comprehensive studies of the two typical Mesozoic-Cenozoic uranium ore forming fossil hydrothermal systems—Xiangshan Volcanic Rock Type U ranium Ore-field and Xiazhuang Granite Type Urani um Ore-field by integration of "Three sources: Uranium and its Mineralizer Source, Water Source and Heat Source".

本文综合运用多种地质手段，通过解剖华东南地区二个典型的中新生代铀成矿古水热系统，即江西相山火山岩型铀成矿古水热系统和广东下庄花岗岩型铀成矿古水热系统，将&铀源、水源和热源&三者结合起来，首次探讨了华东南地区中新生代古水热系统的形成条件及其铀成矿作用。

They are supergene minerals occurring in oxidized zones of uranium deposits and assuming green-yellow colors. This kind of minerals can be used as one of the mineral indicators in search for uranium deposits. They are mainly composed of ~(3-) and ~(2+), in which As and U are known as poisonous and harmful elements causing environmental pollution.

铀酰砷酸盐矿物是主要产出于铀矿床氧化带中比较特征的黄绿色表生矿物，是寻找原生铀矿床的重要矿物学标志，化学组成主要是[AsO4]^3-和[UO2]^2 ，其中As和U均是对环境造成极大危害的有毒或放射性有害元素。

The heat-producing power of weapon-grade plutonium, weapon-grade uranium and depleted uranium per kilogram were calculated through simulation and dynamic decay cascade, the regression line was fitted and analyzed. The temperature fields of the nuclear explosive device raised by Steve Fetter were analyzed according to the simulation results of the heat-producing power of the exothermic materials. The hypothetical models of the nuclear explosive device were modified according to the normal disposal method in industry manufacture, and thermal stress distribution was simulated with the information processed before.

通过级联衰变动力学计算得到每千克武器级钚、武器级铀及贫化铀的放热功率，并对仿真结果进行拟合分析；选取其最大值对Steve Fetter提出的公开核装置假想模型进行温度场数值仿真；根据工业生产实际对Steve Fetter提出的公开核爆炸装置假想模型进行修订，并对其进行热应力仿真分析。

Low rotten bituminous coal (jet coal, it glues coal to be and weak to glue coal), natural radioactive level lower,( 238U: 33.2- 50.0Bq/kg , 232Th: 52.5- 54.4Bq/kg , 226Ra: 30.6- 56.5Bq/kg ), obviously lower than the brown coal than activity, and the uranium , radium which the companion grew is in a basic balance, uranium , thorium are also in a basic balance.

低变质烟煤（包括长焰煤、不粘煤和弱粘煤）天然放射性水平较低，（238U：33.2～50.0Bq/kg、232Th：52.5～54.4Bq/kg、226Ra：30.6～56.5Bq/kg），比活度明显低于褐煤，且伴生的铀、镭基本平衡，铀、钍亦基本平衡。

The decontaminating experiments of radioactive surface contamination are carried out with polymer mambrane decontaminating material which can be denuded at a uranium mill and with chemical decontaminating agent at a uranium mine.

介绍了在某铀水冶厂厂区内用可剥离聚合物成膜去污材料和在某铀矿用化学去污剂分别进行的放射性表面污染去污试验，讨论了试验结果，对我国铀矿冶放射性表面污染去污提出了建议。

Great attention has been paid to the threat of the highly radioactive and the low-level radioactive waste from nuclear industry and the radioactive waste has become a more and more serious problem with the waste from medical industry and research institutions. The uranium from uranium minings has caused the pollution of groundwater around.

核工业生产中产生的高、中、低放废物对环境构成的威胁越来越受到重视，它们与医疗、科研、国防事业的核废物一起成为越来越严重的环境问题，尤其是铀矿冶中产生的U对地下水的污染。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。