At these very high temperatures the nonfissioned parts of the nuclear weapon are vaporized.

在这样的高温下，核弹的非裂变部分将被气化。

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This will create conditions for other nuclear weapon states to join in the nuclear disarmament process.

这也将为其他核国家参与核裁军进程创造条件。

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The nuclear weapon States should take all necessary steps to avoid accidental or unauthorized launches of unclear weapons.

核国家应采取一切必要措施以避免意外发射或未经授权的发射。

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"As the only nuclear power to have used a nuclear weapon, the United States has a moral responsibility to act.

VOA: special.2009.04.11

Western nations are concerned that Iran could use the missile technology to launch a nuclear weapon, which Iran is suspected of building.

VOA: special.2009.02.07

The president said groups like al-Qaida would surely use a nuclear weapon if they got one.

VOA: special.2010.04.17

The world has gone over sixty years without another detonation of a nuclear weapon in warfare.

CENTERFORSECURITYPOLICY: A Nuclear Iran: The Case for Action

India and Pakistan declared themselves nuclear weapon states when they tested atomic bombs in 1998.

NPR: Nuclear Weapons Gain Importance for Regional Powers

He will take every action necessary to ensure that Iran does not acquire a nuclear weapon.

WHITEHOUSE: The White House