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。

youdao

Under that arrangement, Russia is providing the enriched uranium fuel for the reactor.

根据有关安排，俄罗斯正在为这个核反应堆提供浓缩铀。

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Yet he won't ship enriched-uranium fuel to Iran's all-but completed nuclear reactor while its enrichment work goes on.

但是他不会在伊朗继续进行铀浓缩活动的时候给伊朗几乎要完成的核反应堆带去浓缩铀。

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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

Nuclear reactor fuel is enriched to 3-5% Uranium-235.

FORBES: What Are The Most Important Things To Know/Understand About Nuclear Energy?

The prototype light-water reactor that North Korea is constructing at Yongbyon, and which requires enriched-uranium fuel, could add to the fissile material stockpile when it is completed, possibly by the end of the year.

BBC: Yongbyon restart: North Korea ramps up nuclear tension

Rather than sit down with the six, it may be hoping to revive talks about a separate proposal for Russia, France, America and the IAEA to help it find replacement 20%-enriched fuel for a research reactor in Tehran that supplies medical isotopes.

ECONOMIST: Iran pockets Bushehr and plays on