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.
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