Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen (it has a proton and a neutron in its nucleus, instead of just a proton).
重水之所以重是因为水中氢的重量是普通氢的两倍（它的原子核中有一个质子和一个中子，而不仅仅是一个质子）。
Deuterium is a heavier and stable isotope of ordinary hydrogen.
氘是普氢较重的、稳定同位素。
The frequency needed to do this can then be compared with that which flips the spin of an ordinary hydrogen atom.
这些测试的频率将会与翻转普通氢原子的频率作对比。
Like stars, brown dwarfs are capable of fusing a rare form of hydrogen called deuterium, but they are too lightweight to burn ordinary hydrogen and quickly run out of fuel.
同恒星相类似，棕矮星能够融化氢原子，但它们重量太轻，它们还不能把融化氢的过程持续下去。
Heavy water gets its name because it contains deuterium, a form of hydrogen that has a neutron in its nucleus as well as the usual proton and thus weighs twice as much as the ordinary sort.
重水因含重氢而得名。重氢是氢原子的一种，其原子核中含有一枚中子，加之正常氢元素中的质子，重量为一般氢原子的两倍。
Not as much as the hydrogen atom going from 1s to 2s to 2p, but still by much more than ordinary thermal energies at room temperature.
虽然不像氢原子从1s激发到2s或到2p那么多，但是这个能量已经非常非常大，对于室温的热能来说。
Compared with ordinary chemical batteries, fuel cells can replenish fuel, usually supplemental hydrogen.
和普通化学电池相比，燃料电池可以补充燃料，通常是补充氢气。
Hydrogen gas can be produced by the electrolysis of ordinary water.
通过电解普通水可以制取氢气。
Hydrogen gas can be produced by the electrolysis of ordinary water.
通过电解普通水可以制取氢气。
应用推荐