Enriched uranium is a key component of a nuclear weapon.

浓缩铀是核武器的一个关键组成部分。

《柯林斯英汉双解大词典》

The study calculates that the plant has facilitated about six tonnes of weapon-grade or 90% enriched uranium.

该研究算出，这一工厂已经生产了大约6吨军用的或90%浓度的浓缩铀。

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Enriching raw uranium is more expensive than converting highly enriched uranium to fuel grade.

浓缩原铀比将高浓缩铀转化至燃料品级更昂贵。

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In Washington, a military intelligence official told a Senate committee that Iran could be one year away from producing enough highly-enriched uranium for a nuclear weapon.

VOA: special.2010.04.17

Tehran has not,as yet, agreed to the terms of a UN-draft deal to trade for highly enriched uranium from France and Russia.

VOA: standard.2009.12.18

He gave a cautious endorsement of U.S.-backed U.N.plan to handle Iran's enriched uranium.

VOA: standard.2009.10.30

Mark Fitzpatrick argues that if Pyongyang has perfected the highly-enriched-uranium route to a bomb, then there will be heightened concern about the potential for the proliferation of these weapons or materials.

BBC: North Korea nuclear test raises uranium concerns

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

Or it could be used secretly with more sophisticated machines quickly to turn Iran's legal stockpile of low-enriched uranium into high-enriched uranium for weapons, for example if Iran were to withdraw from the Nuclear Non-Proliferation Treaty.

ECONOMIST: Iran's nuclear programme