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。

It is a naturally occurring radioactive form of hydrogen, sometimes known as heavy hydrogen.

它是氢气的一种形态，它自然发生放射，有时被人们称为重氢。

Moon rocks show that lunar water has more heavy hydrogen than does terrestrial water, indicating a cometary origin.

研究表明，月球岩石中的水资源比地球水资源包含更多的重氢元素，意即月球水有可能来源于彗星。

Fusing heavy hydrogen isotopes requires lots of energy, partly because the nuclei are positively charged and repel each other.

融合重氢同位素需要大量能量，部分原因是因为原子核带正电并相互排斥。

Moon rocks show that lunar water has more heavy hydrogen than does terrestrial water, indicating a cometary origin. Christopher Intagliata reports The Apollo moon missions ended almost 40 years ago.

研究表明，月球岩石中的水资源比地球水资源包含更多的重氢元素，意即月球水有可能来源于彗星。