地基的岩石和泥土中铀的含量。
研究钨的小组正在研究的矿石样品中含有大量的铀，足以分裂成含量可测量的钨。
The ore sample the Masurium group was working with had plenty of Uranium in it enough to split into measurable amounts of Masurium.
在世界各地，空气中都存在氡气，其浓度取决于土壤中差别极大的铀含量。
Radon gas in the air is present worldwide, its concentration depending on the highly variable uranium content of the soil.
美国地质调查局(usgs)拥有一个全美浮尘铀含量的在线数据库。
The U.S. Geological Survey (USGS) maintains an online database of fly ash-based uranium content for sites across the U.S..
它产生于铀衰变链中的镭，而铀是所有岩石和土壤中都能找到的一种元素，含量各不相同。
It is produced from radium in the decay chain of uranium, an element found in varying amounts in all rocks and soil.
在大部分地区，浮尘含有的含有的铀比普通岩石中的含量还低。
In most areas, the ash contains less uranium than some common rocks.
地下水测试显示植物中的铀含量高达世界卫生组织的最高安全量的15倍。
Tests on ground water show that levels of uranium around the plants are up to 15 times the World Health Organisation's maximum safe limits.
UO 2一般内含3- 5%的U235，而铀合金经过浓缩则含有90%的U235，但是船用推进器一般使用U 235含量为45 - 75%的浓缩铀。
The UO2 fuel is normally enriched with 3-5% of U235. The uranium alloy has been enriched to contain up to 90% U235, but is normally used at between 45-75% U235 enrichment in PWR for ships propulsion.
临沧煤灰的铀含量比这少得多，大约有300ppm。
该类型吸附剂用于海水提铀研究及海水中某些核素含量分析的样品前处理。
This kind of adsorbent was used for extraction uranium from seawater and pretreatment of seawater in several nuclide contents analysis.
并对各流域水体中铀含量存在差异的原因进行了讨论。
The factors that result in large change of uranium content in different regions are also discussed.
换算系数(K)的公式是否合理，直接影响出窿矿石铀含量的分析质量和矿石的分选质量。
The rationality of the conversion coefficient (K) formula affects the analytical quality of uranium content of the ore from underground mining and the sorting quality.
通过塔里木盆地不同层系沉积岩石中放射性元素铀、钍、钾的含量实测数据，计算了不同岩石的生热率。
The paper presents the heat generation rate on the bases of measurements of the contents of uranium, thorium and potassium for different types of sedimentary rock in Tarim basin.
介绍了用同位素稀释质谱法测量辐照元件铀含量的方法。
The measurement methods of uranium concentrations in irradiated fuels by isotopic dilution mass spectrometry are described.
由于锆石铀含量具有差异，蚀刻标准是锆石长度测量标准化的主要研究内容。
As for zircon, because of different contents of uranium, the etching standard is the main research contents for the standardization of length measurement.
该方法检出限低，精密度高，操作简单，分析速度快，测定范围宽，是测定铀含量的较理想的方法。
This method is characterized by low determination limit, high precision, easy operation, high speed and wide range of determination being a ideal method for determining uranium content in ore samples.
研究PC 12细胞内精脒含量在浓缩铀诱导细胞凋亡中的作用。
This is a study on injurious effects of cellular spermidine to PC12 cells irradiated by enriched uranium.
另一方面，氪-85是铀-235和钋-239的核裂变产物。 对氪-85的同位素含量测定可以用于监督国际核公约的执行情况。
On the other hand, analyses of 85 Kr, a fission product of uranium-235 and plutonium-239, can serve as a means to help verify compliance with the Nuclear Non-Proliferation Treaty.
分析了容量法测定铀矿石中铀含量测量不确定度的影响因素。
The influencing factors of the uncertainty of measurement result for uranium in uranium ore by volumetric analysis method were discussed.
计算 表明：容矿层中铀和可溶有机物、酸解吸附烃含量之间具有明显的相关关系。
Uranium content in rock is positively correlative to soluble organics and acidolysis hydrocarbon by statistical count.
以512矿床为例，研究了砂岩铀矿体铀、钍含量及其放射性同位素分布规律，由此讨论铀矿体的定位条件。
Exemplified by No. 512 uranium deposit, this paper discusses the delineation of ore bodies in sandstone type uranium deposits by uranium and thorium concentrations and their radioisotopes.
以512矿床为例，研究了砂岩铀矿体铀、钍含量及其放射性同位素分布规律，由此讨论铀矿体的定位条件。
Exemplified by No. 512 uranium deposit, this paper discusses the delineation of ore bodies in sandstone type uranium deposits by uranium and thorium concentrations and their radioisotopes.
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