It threatens to rebuild Yongbyon and start making weapons-grade plutonium again.

它威胁说要重建宁边核设施并重新开始制造武器级别的钋。

youdao

Accounting has since improved, and the country is now thought to have around 145 metric tons of weapons-grade plutonium.

会计方面已经得到改善，国家目前大概有核武原料的145公吨的钚。

youdao

In a major and welcomed development, Russia announced that it will close its last weapons-grade plutonium production reactor.

一项重大、颇受欢迎的进展是俄罗斯宣布将关闭最后一座武器级钚生产反应堆。

youdao

The United States and Russia signed an agreement to dispose of sixty-eight tons of weapons-grade plutonium.

VOA: special.2010.04.17

It is building a facility in South Carolina to transform excess weapons-grade plutonium into fuel for nuclear reactors.

FORBES: Areva Chief Talks Power

In a major and welcomed development, Russia announced that it will close its last weapons-grade plutonium production reactor.

WHITEHOUSE: Nuclear Security Summit: Presidential Press Conference

Russia and America finalised a decade-old deal to eliminate 68 tonnes of weapons-grade plutonium, enough for nearly 17, 000 nuclear devices.

ECONOMIST: Disarmament and counter-proliferation