Every currently operating light-water reactor, if deprived of power and cooling water, can melt down.

世界上所有的轻水反应堆，一旦电力和冷却水供应不足，都有可能发生反应堆事故。

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Pyongyang's foreign ministry said in a statement that the construction of an experimental light-water reactor and low enriched uranium were "progressing apace".

平壤的对外发言人在声明中称，实验型轻水反应堆的建设和低浓度铀的提炼取得“飞速进展”。

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The power density is about a factor of ten lower than in the light water reactor.

功率密度这个因素要比,轻水反应堆低10倍。

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North Korea insists it has built the bomb already, but now wants America to provide it with a modern light-water reactor as the price for disarming.

ECONOMIST: Diplomacy and proliferation

The light-water reactor, which is not capable of producing weapons-grade plutonium, was promised to North Korea in the early 1990s for the North giving up its nuclear weapons.

CNN: North Korea claims to have weaponized plutonium

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