The explosion, he said, was due to hydrogen buildup in the steam piping that mixed with oxygen, and that there was no damage to the container with the nuclear fuel.

他表示，这次爆炸是由于聚集在蒸汽管道的氢气与氧气混合而引发的，而且未对核燃料容器造成任何损伤。

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The venting process triggered the explosion when combustible hydrogen released by the steam mixed with oxygen in the air, officials said.

日本官员说，正是被释放的蒸汽包含的可燃氢气在接触到大气中的氧气后，导致了那次爆炸。

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Since hydrogen gas is extremely combustible, when enough hydrogen gas is mixed with air, it reacts with oxygen. If there is enough hydrogen gas, it will react rapidly, producing an explosion.

因为氢气是高可燃气体，当足够多的氢气进入空气中，它就会跟其中的氧气反应。

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Monday's explosion rocked the ethnically mixed area of Bosnjacka Mahala in Mitrovica.

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