铀

There was no obvious source in the Punjab that could account for such high levels of contamination.

而且在旁遮普邦也没有任何明显的来源能造成这么高浓度的铀污染。

To slow down neutrons, the uranium may be put into the reactor in the shape of rods surrounded with a neutronslower such as carbon .

为使中子减慢，可以把棒状铀放进反应堆，其周围放上碳一类中子减速剂。

Thus generation and accumulation of uranium has intrinsic relationship in origin with pyrite and organic matters.

铀的富集和铀矿的形成可能与黄铁矿、油气、煤等有机质有密切的成因关系。

It is already known that the fine fly ash produced when coal is burned contains concentrated levels of uranium and a new report published by Russia's leading nuclear research institution warns of an increased radiation hazard to people living near coal-fired thermal power stations .

人们已经知道，煤炭燃烧时产生的"飞灰"中含有高浓度的铀；同时俄罗斯最顶尖的核研究机构的一项新报告指出，燃煤热电厂对附近居民的辐射威胁越来越大。

Its stable isotope s are all end products of radioactive decay of uranium and other heavy elements.

其稳定的同位素为铀和其它重金属放射衰变后的最终产物。

Its stable isotopes are all end products of radioactive decay of uranium and other heavy elements.

其稳定的同位素为铀和其它重金属放射衰变后的最终产物。

However, some of the minerals contain xenon isotope s unlike those usually produced by radioactive decay of uranium

然而，有些含氙同位素的矿物并非如此，是由铀的放射性衰变产生的。

So you're saying the radioactive uranium in his urine is irrelevant.

所以你的意思是尿中的放射性铀是无关的

An introduction to environmental level of transuranium elements and a review of the recent advance in radiochemical analyses of them are made.

本文介绍了超铀元素的环境水平，对它们的放射化学分析的进展进行了述评。

Comprehensive studies showed the radiogenic uranium plays an important role in hydrocarbon generation.

综合以上分析，认为放射性铀对油气生成具有氧化催化作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。