Uranium concentration by organic matter is displayed in each stage of coalification.

有机质对铀的富集作用表现在成煤作用的各个阶段。

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This study carried out in 1984-1987 shows that uranium concentration in the Laizhou Bay is high.

本文报道了1984年和1987年莱州湾海水中U分布规律的调查研究结果。

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Uranium concentration in coalbeds reflects tectonic development and evolution of coal-forming processes.

煤中铀的富集成矿，可反映成煤大地构造的演化。

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Probably the last thing plant operator Ouchi Hisashi saw before he passed out was a blue flash in the concentration of uranium he was mixing in a steel vat.

CNN: 'We're Scared for Our Baby'

What they failed to appreciate, and what the company failed to tell them, was that a fast-breeder uses fuel that has a 19% concentration of the fissile isotope of uranium, 235U. Ordinary nuclear reactors use fuel containing around 3% of the fissile isotope.

ECONOMIST: All over in a flash