Under it, Iran would give up most of its uranium stockpile in return for enriched fuel for a medical reactor.

根据这份合约，伊朗将放弃它的大多数储备铀以换取医用反应器的高浓度燃料。

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The letter spells out a plan for Iran to send 1,200 kilograms of low-enriched uranium to Turkey for higher-enriched fuel for a medical research reactor in Tehran.

信函公布了伊朗计划将1200公斤低度浓缩铀送往土耳其，以换取高度浓缩燃料，供德黑兰医学研究反应炉使用。

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Russia is legally required to ensure that the re-enriched fuel and reprocessed waste is returned or properly disposed of, but only a small percentage of the original material gets sent back.

法律上，俄国应该确保再浓缩核燃料及后处理核废料被回收或者正确处理，但是仅有一小部分原材料被回收。

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Enriched uranium can be used as fuel for nuclear energy as Iran says or it can be used for nuclear bombs.

VOA: special.2009.09.26

Separately,Tauscher cautiously welcomed an announcement by Iranian President Mahmoud Ahmadinejad that Tehran is ready to send its enriched uranium overseas in exchange for nuclear fuel.

VOA: standard.2010.02.03

On Monday,Iran formally notified the IAEA of its response to the nuclear-fuel swap deal, under which it would ship some low-enriched uranium to Turkey in return for higher grade fuel for a Tehran research reactor.

VOA: standard.2010.05.25

But experts say there is unlikely to be agreement on converting all nuclear power stations to use low-enriched fuel.

BBC: Obama in push for 'world without nuclear weapons'

Does Iran expect to get the 20% enriched fuel rods from another source, while its own uranium is under Turkish guard?

ECONOMIST: Brazil, Turkey and Iran

It is cheaper, vastly cheaper, to buy in your enriched fuel and then send it back out again to be reprocessed.

FORBES: Stuxnet and the Iranian Nuclear Program