| 释义 |
氘dāo氢的同位素之一,符号D(deuterium)或H。原子核中有一个质子和一个中子,普通的氢中含有0.02%的氘。用于热核反应。{deuterium (D or H), one of the isotopes of hydrogen whose atomic nucleus consists of one proton and one neutron. Naturally occurring hydrogen contains 0.02% deuterium, which is used for thermonuclear reaction.}也叫also重氢{zhòngqīng}。 |