铀的

It indicates that TBOPDA has better hydrolysis stability. At 50 ℃,when the acidity is 1 mol/L HNO_3, the effects of hydrolysis on distribution ratio are unchanged, when the acidity is 5 mol/L, the changes of distribution ratio are about 37%.

研究结果表明，该萃取剂在水溶液中具有较高的稳定性，当酸度为1mol/L，温度达到50℃时，铀的萃取性能没有变化；当酸度提高到5mol/L时，50℃条件下，铀的萃取分配比下降约37%。

Only two, neptunium (93) and plutonium (94), occur in nature, and only as traces in uranium ore s as a result of neutron irradiation.

自然界里只有錼(93)和钸(94)两种超铀元素，而且只以痕量存在于铀的矿物中，是受中子辐照后的产物。

Only two, neptunium (93) and plutonium (94), occur in nature, and only as trace s in uranium ores as a result of neutron irradiation.

自然界里只有錼(93)和钸(94)两种超铀元素，而且只以痕量存在于铀的矿物中，是受中子辐照后的产物。

Only two, neptunium (93) and plutonium (94), occur in nature, and only as traces in uranium ores as a result of neutron irradiation.

自然界里只有錼(93)和钸(94)两种超铀元素，而且只以痕量存在于铀的矿物中，是受中子辐照后的产物。

It is concluded that effects of coal on uranium include sorption, complexation and revivification in syngenesis and early diagenesis and coal measures have positive effect on redistribution and preservation of uranium deposit in the epidiagenetic stage.

研究认为，在同生成岩阶段和早成岩阶段，煤对铀的作用主要包括吸附作用、络合作用及还原作用；表生成岩阶段，煤对铀的再分配和"保矿"起到积极作用。

This paper introduces present situation of uranium sorption experiments and summarizes some carriers that can uranium.

介绍了铀吸附实验的研究现状，对吸附铀的各种载体进行了总结。

Three heteronuclear uranyl complexes were obtained via hydrothermal reaction, too.

另外，在水热条件下，还利用这些芳香有机酸合成了三个铀的异核金属配位聚合物，这为铀的异核金属配合物家族增添了新的成员。

In order to overcome disadvantages of conventional leaching technique such as high energy consumption and low productive benefit, and get better utilization of uranium resource, the study on uranium extraction from certain alkaline uranium ore with heap leaching process have been carried out according to the characteristics of the ore such as high content of carbonate and low grade of uranium.

为了克服常规工艺高能耗、低效益的缺点，充分利用铀矿资源，针对某碱性铀矿石碳酸盐含量高、铀品位低的特点，开展了堆浸法提取铀的研究。

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。

Influence of vacuum heat-treatment on the corrosion resistance of uranium surface overlaid with graphite at 100 ℃ is studied.

为了提高铀的抗氧化腐蚀能力，利用石墨的粘附特性，在铀表面涂覆一层石墨，并进行真空热处理，在100 ℃条件下对热处理后的样品进行氧化腐蚀试验。

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。