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.
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。
2
It is a naturally occurring radioactive form of hydrogen, sometimes known as heavy hydrogen.
氚是氢的放射性形式，有时被称作超重氢。
3
Are the rods the only danger, or are there other components, like cooling tanks or hydrogen containers, that are also dangerous with radioactive meltdown?