铀浓缩

官方称，Burns会听取各方意见并重申美国的立场，即如果要谈判继续，伊朗就必须马上停止其铀浓缩活动。

Officials say that Burns will listen in and reiterate the US position that Iran must suspend its uranium enrichment program before talks can even proceed .

第一张王牌，是向全世界透露了到访的美国核科学家西格弗里德赫克尔（SiegfriedHecker）所描述的情景：一家拥有至少1000台离心机、现代化程度令人震惊的铀浓缩设施。

The first was to reveal to the world what Siegfried Hecker , a visiting US nuclear scientist , described as an astonishingly modern uranium enrichment facility with at least 1,000 centrifuges .

实际上，它是用来将铀浓缩以制造武器。

It was actually used for enriching uranium to weapons-grade levels .

另一个瓶颈就是Natanz的铀浓缩设施；

Another choke-point is the Natanz enrichment facility ;

访问朝鲜时见识过该国新公开的铀浓缩工厂的科学家西格赫克（SigHecker）表示，该工厂控制室的现代化程度高得令人吃惊。

Sig Hecker , the visiting scientist who saw the recently unveiled enrichment plant , said its control room was astonishingly modern .

美国国务院表示，朝鲜将允许国际原子能机构（iaea）核查人员回到一直在进行铀浓缩的宁边（yongbyon）核设施。

The US State Department said North Korea would allow for the return of inspectors from the International Atomic Energy Agency to the Yongbyon facility , where it has been enriching uranium .

还没有铀浓缩活动在Natanz开展，但周五国际原子能机构的外交官说这项工作可能在近期内开始。

No enrichment is yet taking place at Natanz , but diplomats accredited to the IAEA said Friday it may start within days .

六氟化铀（UF6）是一种挥发性的铀化合物，是核燃料生产过程中为了实现铀浓缩的一个中间产品。

Uranium hexafluoride ( UF6 ) is a volatile compound of uranium used in the uranium enrichment process that produces fuel for nuclear reactors .

报告列出了利用计算机病毒使位于RasLanouf海岸的石油精炼厂停工的方法。这种病毒类似于去年导致伊朗铀浓缩机系统崩溃的Stuxnet蠕虫。

The study outlined ways to disable the coastal refinery at Ras Lanouf using a computer virus similar to the Stuxnet worm that led to a breakdown in Iran 's enrichment program late last year .

该决议的发起人之一，美国大使苏珊·赖斯（SusanRice）表示，第四轮制裁是完全正当的，因为伊朗没有停止铀浓缩活动，反而在最近几个月增加了挑衅行为。

Javad Rahiqi , the head of Iran 's Atomic Energy Organization . U.S. Ambassador Susan Rice , one of the sponsors of the resolution , said this fourth round of sanctions was ed because Iran has not suspended its uranium enrichment activities but rather has increased its defiant behavior in recent months . " Last September ,

谈到核武器问题，据伊朗官方日报《世界报》（Kayhan）的报道，伊朗已开始在福尔多铀浓缩厂生产浓缩铀。

On the subject of nuclear weapons , according to the Iranian newspaper Kayhan , Iran has started to enrich uranium at its forDo production facility .

同时继续提高他们的铀浓缩能力。

While they continue to build up their enrichment capability .

伊朗政府发言人说，伊朗不会停止铀浓缩工作。

The spokesman says Iran will not suspend uranium enrichment .

朝鲜坚称其铀浓缩设施完全用于民用目的。

North Korea insists that its enrichment facility is purely for civilian purposes .

有报道称伊朗的铀浓缩活动下降了20%，

There are reports Iran offered to suspend uranium enrichment at 20 percent ,

武器级铀浓缩为大约90%的浓度。

Uranium for weapons is about 90 % enriched .

因此，美国应该为暂停铀浓缩设定最后期限。

So the US should set a deadline for the suspension of enrichment .

铀浓缩过程既可产生核燃料，也可生成用于核武的裂变材料。

The process can yield both nuclear fuel and fissile material for weapons .

伊朗原子能机构宣布，进一步的铀浓缩活动将从今日开始。

The Iranian Atomic Energy Authority announ-ced that further enrichment would begin today .

实际上，伊朗已经拆除了数千台用于铀浓缩的离心机。

In fact , Iran has already dismantled thousands of centrifuges that enrich uranium .

伊朗继续拒绝联合国安理会要求伊朗停止铀浓缩活动的决议。

Iran continues to defy the Security Council 's instructions to stop enriching uranium .

很可能伊朗领导人会停止铀浓缩活动，并关闭核设施。

It 's possible Iranian leaders would stop enriching uranium and close nuclear facilities .

国际在线报道：法国外长巴尼耶12日在巴黎警告伊朗不要重启铀浓缩活动。

French Foreign Minister Michel Barnier on Thursday urged Iran not to resume uranium .

2012年，伊朗可能会迈出铀浓缩这关键的一步。

In 2012 , it will probably take the big step of enriching uranium .

朝鲜可以比隐藏其钚设备更容易的隐藏起其铀浓缩设备。

North Korea can hide uranium-enrichment facilities from aerial surveillance more easily than plutonium facilities .

许多专家坚称，朝鲜没有研制出任何接近全面铀浓缩项目的装置。

Many experts maintain that Pyongyang has not developed anything near a full-scale enrichment programme .

这笔交易去年破裂，伊朗于去8月份重新开始铀浓缩活动。

That deal broke down last year , and Iran resumed uranium conversion in August .

华盛顿圈内人士暗示，朝鲜在其它设施进行的铀浓缩，可能正在产生武器级材料。

Washington insiders have suggested that uranium enrichment could be producing weapons-grade material at other facilities .

该项目计划到2020年实现每年铀浓缩能力1000吨。

It was projected to have a uranium enrichment capacity of 1,000 metric tons by 2020 .

欧洲铀浓缩技术协会

European Society for Enrichment of Uranium