核裂变却是一个铀核吸收一个中子，而不是其它过程。
Nuclear fission, a process whereby a uranium nucleus absorbs a neutron, is not.
什么是卵石层反应堆，事实上就是同样的,铀核包装的微粒,有大约1万的微粒,被放入了一个石墨卵石里。
What a pebble bed reactor is, is in fact the same coated particle with the uranium kernel and there are about ten thousand of these particles that are put into a graphite pebble.
全球30个使用核能的国家中大部分没有建造他们自己的铀浓缩与后处理设施，而是从外部的供应商那里购买核原料。
Most of the 30 countries that use nuclear power don't build their own enrichment or reprocessing facilities, instead buying fuel for their nuclear power plants from external suppliers.
国际原子能组织观察员报告称已在叙利亚发现了更多来源不明的铀的踪迹，但叙利亚仍否认其拥有秘密核项目。
Inspectors from the International Atomic Energy Agency reported that they had found more unexplained traces of uranium in Syria, which still denies having a secret nuclear programme.
它的最主要任务是勘察月球表面的自然资源，包括可以用于核然料的铀。
One focus was to prospect the lunar surface for natural resources, including uranium for nuclear fuel.
文章称，美国核管理委员会在过去的10个月中下发了28个新的铀遴选场许可证。
The article says that 28 applications for new uranium mills have come to the Nuclear Regulatory Commission in the last 10 months.
此前，美方一直表示，在伊朗终止其铀浓缩核项目之前，不会与其面对面地谈判。
Until now, Washington had refused to meet face-to-face with Iran on the nuclear issue, unless it first stopped its uranium enrichment program.
伊朗的铀处理程序可能首先需要重新设置，这引发外界猜测说，伊朗作出这一表态可能更多是要同西方进行核谈判，而并非立即开展浓缩铀活动。
Iran's processing program would likely need reconfiguring first, prompting speculation the announcement may have more to do with nuclear negotiations with the West than imminent enrichment.
氢是最轻的元素，原子核中只有一个质子，而铀这种自然形成的最重元素的原子核中有92个质子。
Hydrogen, the lightest element, has a single proton whereas uranium, the heaviest naturally occurring one, has 92.
只有在调查人员确认伊朗的核活动确实是用于和平用途以后，伊方才能继续进行铀浓缩项目。
Only when inspectors were confident of the peaceful nature of Iran’s programme could enrichment resume.
它的核弹头使用爆炸设计有一个由约15 - 10千克高纯度浓缩铀组成的实核。
Its nuclear warheads use an implosion design with a solid core of about 15-20 kilograms of highly enriched uranium.
伊朗说，在其有争议的核项目问题上，伊朗不会就提炼浓缩铀的权利进行谈判。
Iran says it will not negotiate over its right to enrich uranium as part of its controversial nuclear program.
主要国家要求其停止铀浓缩和其它牵涉到武器的敏感核活动、以及重归谈判，伊朗从中获得了动力。
Iran has been offered incentives by the major powers to halt uranium enrichment and other sensitive nuclear activities believed weapons-related, and return to negotiations.
伊朗表示，将为了民用目的继续进行核项目研究和铀浓缩。
Iran has said it intends to go forward with nuclear research and uranium enrichment for a civilian energy program.
伊朗在库姆的一系列计划就包括安装多部离心机，其转速将比被公开的另外一座位于纳坦兹的核工厂用于铀浓缩的离心机转速更快。
Iran's plans for Qom include installing faster-spinning centrifuge machines than those now enriching uranium at its other known plant, at Natanz.
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。
A few elements, among them uranium and thorium, spontaneously disintegrate into lighter elements by chances.
据此，中核集团公司提出“铀资源大基地”战略设想。
Accordingly, CNNC has put forward strategic idea outline about "giant base of uranium resources".
日本的核灾加上德国的弃核都对价格构成严重打压，铀价创两年来最大跌幅。铀业上市公司纷纷遭到锤打。
Uranium prices have seen the largest drop in two years following the Japanese nuclear disaster and Germany's decision to phase out its nuclear plants, both of which hit uranium prices hard.
核协议要求伊朗限制生产浓缩铀，并把几处核设施转用于其它目的。
The nuclear deal required Iran to limit its enrichment of uranium and convert several of its nuclear facilities to other uses.
但这六国九月二十八日一致认为，如果伊朗想要避免进一步的制裁，它就必须要澄清它过去的核活动，还要中止铀浓缩计划。
Yet the six agreed on September 28th that it must still come clean about its nuclear past and still suspend its enrichment programme if further sanctions are to be avoided.
在铀溶液核临界装置上进行了实验研究。
The experiment research has been done on the uranium solution nuclear critical safety experiment assembly.
由于它的大小，该核电设施会需要更少的铀。这分散了发生大型核灾难的风险。
Given the size, it will require less uranium fuel, which minimizes the risk of massive meltdowns.
核裂变只能在某种类型的重核及不稳定核素内发生，如铀- 235及钚- 239。
Nuclear fission can only occur in some types of heavy and unstable nuclei such as in the uranium -235 and plutonium -239.
核裂变只能在某种类型的重核及不稳定核素内发生，如铀- 235及钚- 239。
Nuclear fission can only occur in some types of heavy and unstable nuclei such as in the uranium -235 and plutonium -239.
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