Natural uranium has only seven atoms per thousand of the former.
每上千个自然界的铀才只有7个原子。
Indeed, ninety-five percent of a spent nuclear fuel rod is natural uranium, and so it can be put right back in the ground, just as it was found.
实际上，一个用尽的核燃料棒中95%的是天然铀，因此我们可以把它重新埋入地下，就像刚发现那样。
Based on the experiments, a chemical procedure used for rapidly separating thorium from the natural uranium irradiated by 18o ions was developed.
在条件实验的基础上提出了一个从中能18o离子照过的天然铀样品中简便、快速地分离钍的化学流程。
Australia, Canada and South Africa, all with deposits of natural uranium, are reluctant to accept limits on their future rights to enrich it for profit.
拥有铀自然资源储备的澳大利亚，加拿大和南非自然不情愿接受对他们未来浓缩这些铀以赚取利益权利的限制。
The investigation results on natural uranium concentrations in drinking water sources, Hei River and Ba River, in Xi 'an City are presented in this paper.
对西安市生活饮用水源黑河与灞河水体中天然放射性元素铀含量进行了调查。
Certain countries (Australia, Canada, South Africa, among others) have reserves of natural uranium and might like to profit from enriching them before exporting them.
一些国家(澳大利亚、加拿大、南非等国)天然铀储量丰富，希望将铀浓缩后再出口获利。
What helium is available is depleted in helium-3 relative to what we see in the sun, because most of Earth's helium-4 is freshly made via natural radioactive decay of the elements uranium and thorium.
当氦衰变成为氦-3相对于我们在太阳里看到的那它就可用了，因为地球上多数的氦-4是通过元素铀和钍自然放射性衰变而造成的。
One focus was to prospect the lunar surface for natural resources, including uranium for nuclear fuel.
它的最主要任务是勘察月球表面的自然资源，包括可以用于核然料的铀。
That growth has transformed global energy markets and sustained higher prices for everything from oil to uranium and other natural resources that China has been consuming.
中国经济增长改变了全球能源市场，并使中国消费的每样能源，从石油到铀再到其他自然资源的价格居高不下。
Industrial exports include gold, mercury, uranium, and natural gas and electricity.
工业出口包括黄金，汞，铀，天然气和电力。
As a product from the uranium disintegration, radon is a natural radioactive idle gas.
氡是天然放射性惰性气体，是铀系衰变链中的一个衰变产物。
Uranium is one of the most powerful natural energy sources known, used in the production of clean, stable base-load electricity.
铀是人们公认的最具潜能的自然能源，通常用于生产无污染、基本负荷电力。
The results show that there is a normal level of natural radioactivity of soil in the Xiazhuang granite uranium ore field.
评价结果表明，下庄铀矿田的土壤中天然放射性水平处于正常范围。
A laboratory test for remedying the groundwater environment after in-situ leaching of uranium by natural water flushing is carried out.
通过天然水清洗恢复试验，对铀地浸后地下水环境修复进行了研究。
Natural Resources: Coal, gold, tungsten, lead, copper. uranium.
自然资源：煤、金、钨、铅、铜、铀。
But the utilization of coal, oil, natural gas and uranium is the conversion and destruction of resources, and causes tragedy effects to the human and environment.
但煤炭、石油、天然气和铀的利用，是对资源的转换和毁灭，给人类和环境带来灾难性的后果。
This paper deals with the basic theory of the natural electric field method and its application to the prospecting for interlayer oxidation zone sandstone-type uranium deposits.
绍了自然电场形成的原理及在寻找层间氧化带砂岩型铀矿中的应用。
Australia has tons of coal, iron ore, uranium, zinc, nickel, and gold. It produces oil and natural gas, but oil imports are growing.
澳大利亚煤口铁矿石口铀口锌口镍和黄金的储量都相当丰富，还出产石油和天然气，但目前其石油进口量正在不断攀升。
During the construction of highway throng uranium abundant area, the influence of natural radioactive radiation to the constructors is deeply concerned by the constructing organization.
在铀资源丰富的地区修建高速公路，天然放射性辐射对施工人员的影响是建设单位非常关心的问题。
During the production of uranium mining and metallurgy, some waste ores and mill tailings with radioactive elements are produced, which may do harm to natural environment and people.
铀矿山和水冶厂在生产过程中产生放射性废渣，这些废渣对周围环境将造成一定的危害。
The mud correction and uranium-radium non-equilibrium correction equation have been derived for 1318XA natural gamma-ray spectroscopy tool, and the division method of deposit thickness is proposed.
推导出1318XA自然伽马能谱测井仪的泥浆修正公式，铀镭不平衡修正公式，提出矿层厚度划分方法。
The results of the laboratory experiment show that under the air preparing or oxygen oxidizing ore, the uranium can be leached from ores by natural ore-bearing aquifer groundwater.
同时室内浸出试验结果表明：在空气预氧化和氧气作氧化剂的条件下，用天然含矿含水层的地下水可以成功浸出矿石中的铀。
The activation and accumulation aroused the abnormity of natural gamma. There is a certain correlation in shallow and deep abnormality of uranium.
相关研究表明，盆地深部和浅部的铀异常具有一定的关系，盆地历经的沉积环境变迁是铀元素富集的主导因素。
The activation and accumulation aroused the abnormity of natural gamma. There is a certain correlation in shallow and deep abnormality of uranium.
相关研究表明，盆地深部和浅部的铀异常具有一定的关系，盆地历经的沉积环境变迁是铀元素富集的主导因素。
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