的 碱金属直接和水中作用，放出氢气。
The free alkali metals react immediately with water to liberate hydrogen.
蓄电时锌阳极会被氢氧化钾电解液腐蚀，并放出氢气。
Zinc anode is corroded by electrolytic KOH solution during storage, and then hydrogen gas is evolved.
控制棒接连与过热蒸汽产生反应，释放出氢气以及放射性气体，这些气体也通过减压阀释放。
The control rods, in turn, react to the superheated steam and begin to release hydrogen and radioactive gases. These are also released through the PORV.
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