This year’s observance of the International Day Against Nuclear Tests marks the twentieth anniversary of the closure of the nuclear weapons test site at Semipalatinsk, Kazakhstan.

今年禁止核试验国际日正值哈萨克斯坦塞米巴拉金斯克核武器试验场关闭20周年。

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They were sent up with early space flights to see how human cells coped with zero gravity and exposed to radiation to test the effects of nuclear weapons.

这些细胞随着早期的航天飞行被送上太空，用以观察人类细胞在失重的状态下如何存活，并将它们暴露在辐射中用以测试核武器的影响。

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Lop Nur is well known as the test site for Chinese nuclear weapons, and the three plants annotated above could be used to produce weapons-grade fissile material.

罗布泊是著名的中国核武器试验场，被标注出来的三个工厂也可以用于生产武器级别的核裂变原料。

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They and the European Union say it will violate a U.N.resolution imposed after North Korea conducted at 2006 nuclear weapons test.

VOA: standard.2009.04.01

The Security Council resolution was put in place after North Korea' first nuclear weapons test and the launch of a ballistic missile.

VOA: standard.2009.04.03

For weeks, South Korean officials delayed expected announcements it would join, but experts say they had no other choice after Monday's underground nuclear weapons test by the North.

VOA: standard.2009.05.26

Just weeks after Mr. Obama took office, North Korea conducted its second nuclear weapons test.

WSJ: U.S., South Korea Offer North Talks, and a Warning

Security Council last week approved a new round of sanctions over Pyongyang's latest nuclear weapons test Feb. 12.

NPR: SKorea, US Begin Drills As NKorea Threatens War

Elevated levels of radiosensitive cancers in the young shortly after exposure to atmospheric nuclear weapons test fallout have also been documented.

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