The escape of neutrons occurs at the exterior of the uranium ( or plutonium ) material.
中子的逸漏发生于铀 ( 或钚 ) 块的外表面.
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统计计算表明: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.
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Additional mineral properties ( gold , silver and uranium ) were optioned in 2005 in Colorado.
2005年对科罗拉多洲的另外一些矿产地 ( 、 和铀 ) 具有期权.
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On behalf of the A . E . A . , the uranium reconnaissance in the U . K . was undertaken.
受原子能管理局的委托,在英国开展了铀矿普查工作.
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It was the ore from which uranium had been taken and was of no use.
铀元素正是从这种矿石中提取出来的.提炼之后,沥青油矿就成了废渣.
英汉非文学 - 科学史
It is suggested plenum ventilation should be first adopted in ventilation planning of uranium mines.
建议铀矿井通风工程设计中应优先采用压入式通风方式.
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英国政府已获知,萨达姆-侯赛因最近从非洲谋取了大量的铀.
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文章最后系统地总结了改造型与同熔型花岗岩的铀矿化特徵.
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Regional distribution regularities of China's uranium resources are expounded in this paper.
本文主要是论述中国铀资源区域分布规律性.
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Uranium has been redistributed by biological processes as well as in the sedimentary cycle.
由于生物作用,以及沉积旋回,铀发生重新分布.
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根据铀矿山通风系统的实际整改过程, 对通风系统的改进方法作了经验性总结.
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However, nuclear power reactors need uranium with U-235 at a concentration of 30 in 1,000.
但核发电厂的反应堆所需要的铀,起码得把铀235富集到千分之三十.
英汉非文学 - 科技
It looked like ordinary salt, but was one million times more radioactive than uranium.
看起来它就像普通的盐, 而它的放射性却比铀要大一百万倍.
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