查询词典 plutonium

The thesis focuses on the study of the reactions of hydroxyurea, a novel salt free agent, with uranium, neptunium and plutonium in order to investigate the possibilities of its application in the Purex process(1B) for uranium and plutonium separation.

本论文重点研究了一种新型无盐试剂—羟基脲与铀、镎、钚相互作用的化学，旨在研究这种新型无盐试剂在Purex流程铀、钚分离段(1B)中应用的可能性。

PART 8 : METHODOLOGY FOR PLUTONIUM 238 AND PLUTONIUM 239 PLUS 240 ACTIVITY MEASUREMENT IN SOIL SAMPLES.

第7部分：土壤样品中痄238和痄239加240活性测量的方法

An overview of the reaction of plutonium with oxygen and the impact of humidity in the air on plutonium corrosion.

本文综述了钚金属与氧的反应过程及空气湿度对钚金属腐蚀的影响。

Basing on the separation of trace plutonium from uranium matrix,the operating parameters of MC-ICP-MS were studied and optimized for determining the isotope ratio of trace plutonium, such as the adjustment of resolution, selection of mode of ion extraction, elimination of background and interference, etc.

本工作在铀钚化学分离的基础上，对影响MC-ICP-MS法精确测量痕量钚同位素丰度比值的仪器条件进行了优化，研究了仪器分辨率、离子提取模式的选择、"背景和干扰"等参数的影响，探索研究了MC-ICP-MS上质量偏倚的校正方法。

North Korea's plutonium program has been by far its largest nuclear effort over many decades, and we believe our policy could verifiably get the regime out of the plutonium-making business.

北韩的钚项目是其几十年来最大规模的核项目，远远超过其他任何项目。我们相信，我们的政策能够以可核实的方式使北韩政权不再生产钚。

The rest, there is a fission reaction products 3.4%, 1% is plutonium, a longer half-life of these actinides.

剩余部分中，有3.4%是裂变反应产物，1%是钚这类半衰期较长的锕系元素。

Plutonium is a silvery metal that tarnishes in air; it is warm because of energy released in alpha decay.

钸为银白色金属，在空气中会失去光泽。因α衰变释放的能量使得钸是温暖的。

The extraction of americium,plutonium and uranium by dicyclohexano 18 crown 6(DCH18C6)/1 octanol from HNO 3 solution and simulated HLLW are studied.

研究了二环己基18 冠6（DCH18C6）－正辛醇从硝酸溶液和模拟高放废液中镅、钚、铀的萃取。

At low HNO3 concentration and dilution factor above 2, 0.1 mol/L DCH18C6/1-octanol extracts very little americium,plutonium and uranium.The distribution ratios of Am、Pu and U increase with the increase of HNO3 concentration in aqueous phase,and decrease with increasing of dilution factor of HLLW.The distribution ratio of extraction of Pu increases with the increase of extractant concentration.

研究结果表明，在低硝酸浓度和较大稀释倍数情况下，DCH18C6对镅、钚、铀的萃取分配比都比较小，并随着水相硝酸浓度的增大而增大，随着模拟高放废液稀释倍数的增大而减小，提高萃取剂浓度会增大四价钚的萃取。

When the symmetry axis of plutonium component coincides with that of container, the radiation distribution is cylindrical.

从武器上拆卸下的钚部件通常装在特定的密封容器罐内，当具有轴对称结构的钚部件的对称轴与容器罐的对称轴重合时，容器罐外的γ辐射场分布具有轴对称性。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。