Deep underneath your feet is a hellish stone soup, kept hot by a torrent of radiation from poisonous isotopes of uranium, thorium and potassium in the earth's superheated mantle.
我们脚下深处是地狱般的岩石汤,在温度非常高的地球地幔中,有毒的铀、钍和钾元素的同位素释放出的辐射流不断地对这些岩石汤进行加热,使其保持高温。
The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet's interior provides a continuing heat source.
研究人员发现,在地球传送到大气的热流中,地球内部放射性同位素衰变所产生的热量占了其中一半。
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