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- Chemical compounds and mixtures containing uranium and thorium are active in direct proportion to the amount of these metals contained in them. 含铀和钍的化合物和混合物活跃的程度与这些化合物和混合物中这两种金属的含量直接相关。
- A few elements, among them uranium and thorium, spontaneously disintegrate into lighter elements by chances. 少数元素，其中有铀和钍，通过它们核的变化自然蜕变成较轻的元素。
- I was struck by the fact that the activity of uranium and thorium compounds appears to be an atomic property of the element uranium and of the element thorium. 我突然意识到，铀化合物和针化合物的这些活性似乎是元素铀和元素钍的原子属性。
- Uranium and thorium in physical or chemical form or the mixture of uranium and thorium, excluding the nuclear fuel indicated in Article 3. 二任何物理或化学形式之铀、钍或二者之混合物；但不包括第三条所指之核子燃料在内。
- They showed that the elements uranium and thorium emitted radiation that Becquerel had detected in uranium and had found to be similar to X-rays. 他们发现铀元素与钍元素都能发出辐射，贝克勒尔检测了铀元素，发现它类似于X光。
- A simple, quick, and sensitive method to determine the radioactive nuclides of uranium and thorium in talc is described. 介绍了一种测定滑石粉中放射性核素铀钍的简便、快速且灵敏的方法。
- The results showed that uranium and thorium content in water and urine samples were within the range of the nbrmal level for natural water and urine. 结果表明，上海地区天然水源在国家规定的允许范围内，接近于尿液中轴、钍的日排出量。
- One of the major objectives of the U.S. civilian power program is to develop breeder types of reactors to make full use of the nuclear energy latent in both uranium and thorium. 美国民间能量计划的主要目标之一是开发增值反应堆来充分利用铀和钍中的潜在能量.
- Thorium ore, uranium ore, or mixed ore of uranium and thorium In which the rate of content weight uranium and thorium is higher than five-ten thousandths. 一钍矿物、铀矿物或铀钍混合之矿物，其含有铀、钍之成份重量比在万分之五以上者。
- All materials on Earth, including the metal out of which the detectors are built, contain a trace amount of radioactive material such as uranium and thorium. 地球上所有的物质，包括用来建造探测器的金属，都含有些许的放射性物质，比如铀和钍。
- Where the rate of content weight of uranium and thorium in nuclear source material is higher than five-ten thousandths, and the total weight of uranium and thorium does not exceed one kilogram. 三核子原料中含铀、钍成份重量比在万分之五以上，而铀、钍之总重量不超过一公斤者。
- The content of trace uranium and thorium of drinking water,ground water and underground water as determined in Shanghai city and the research of uranium and thorium in urine was carried out. 分析了居民饮用水及其天然水源中微量铀、钍的含量，并与尿液中铀、钍含量进行了比较。
- Radwaste Management Associated with Uranium and Thorium 铀、钍伴生矿放射性废物的管理
- Keywords soil;radioactivity nuclide;uranium and thorium;determination; 土壤;放射性核素;铀钍;测定;
- a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium. 一种极不稳定的放射性元素（卤素系列中最重的一种），铀和钍腐烂的产物。
- A yellow ore of uranium and radium with composition K(UO2)2(VO4)2?H2O. 钒钾铀矿一种铀和镭混合的黄色矿床，K（UO2）2（VO4）2?H2O
- URANIUM AND THORIUM ISOTOPIC EVIDENCE FOR DETERMINING MINERALIZED SECTORS OF THE SANDSTONE TYPE URANIUM DEPOSIT 确定砂岩型铀矿矿化地段的铀、钍同位素证据
- Standard Test Method for Analysis of Uranium and Thorium in Soils by Energy Dispersive X-Ray Fluorescence Spectroscopy X射线荧光光谱法分析土壤中铀和钍的标准试验方法
- A yellow ore of uranium and radium with composition K(UO2)2(VO4)2?2O. 钒钾铀矿一种铀和镭混合的黄色矿床，K（UO2）2（VO4）2?2O
- DISTRIBUTION OF URANIUM AND THORIUM IN THE IRTYSH RIVER AND UPRIVER WASTEWATER FROM A RARE MULTI-METAL MINE 额尔齐斯河流域及某稀有多金属矿废水铀、钍含量分布及其环境影响
