Its stable isotopes are all end products of radioactive decay of uranium and other heavy elements.
其稳定的同位素为铀和其它重金属放射衰变后的最终产物。
However, some of the minerals contain xenon isotopes unlike those usually produced by radioactive decay of uranium.
然而，有些含氙同位素的矿物并非如此，是由铀的放射性衰变产生的。
Helium is the by product of millennia of radioactive decay from the elements thorium and uranium.
氦是钍和铀元素数千年放射性衰变的副产品。
What helium is available is depleted in helium-3 relative to what we see in the sun, because most of Earth's helium-4 is freshly made via natural radioactive decay of the elements uranium and thorium.
当氦衰变成为氦-3相对于我们在太阳里看到的那它就可用了，因为地球上多数的氦-4是通过元素铀和钍自然放射性衰变而造成的。
The KamLAND detector in Japan can detect anti-neutrinos generated by the decay of uranium and thorium-the two elements responsible for most of the radioactive heating of the Earth.
日本的KamLAND探测器可以检测衰变的铀和钍产生的反中微子，这两种元素产生了地球放射热量中的很大部分。
Radon, the radioactive gas given off from the decay of naturally occurring uranium in soil, has been noted by the EPA to be a major environmental cause of lung cancer.[5]The
氡，放射性气体，由泥土中自然出现的铀衰变中释放。EPA已经注意到它是肺癌的主要环境原因。
The measurement of the decay of radioactive isotopes, especially uranium, strontium, rubidium, argon and carbon, has allowed geologists to more precisely determine the age of rock formations.
对放射性同位素衰变的测量，尤其是铀、锶、铷、氩和碳，可允许地质学家更精确地确定岩层的年龄。
The radon and its daughter elements are the decay products of the radioactive elements such as uranium and thorium and the important carcinogenic factor of causing the lung cancer.
氡及其子体是铀、钍等放射性元素产物，是引发肺癌的重要致病因子。
The radon and its daughter elements are the decay products of the radioactive elements such as uranium and thorium and the important carcinogenic factor of causing the lung cancer.
氡及其子体是铀、钍等放射性元素产物，是引发肺癌的重要致病因子。
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