氘

"Heavy water:Water composed of two atoms of deuterium (D; a heavy isotope of hydrogen) and one atom of oxygen, chemical formula D2O."

重水：由二个氘原子和一个氧原子组成的水，化学式为D2O。

"Heavy water:Water compose d of two atoms of deuterium (D; a heavy isotope of hydrogen) and one atom of oxygen, chemical formula D2O."

重水：由二个氘原子和一个氧原子组成的水，化学式为D2O。

Deuterium, a natural isotope of heavy hydrogen, having one proton and on neutron, whereas normal hydrogen has one proton and zero neutrons, could be used routinely.

重水中的天然同位素氘具有一个质子一个中子，它不同于正常的氢只有一个质子没有中子，可以常规应用。

The neutrons are generated by bombard ing a heavy form of hydrogen, called tritium, with a lighter isotope of the gas, called deuterium. The resulting collisions create helium atoms and a stream of neutrons.

中子是通过氢的一种名叫氘的较氚轻的同位素来撞击它的一种名叫氚的重同位素而产生的，它们之间发生的碰撞创造了氦原子和中子流。

The heavy hydrocarbons of coal-derived gas associated with fresh lacustrine and marsh have relatively hydrogen light isotope but those related with marine environments have relatively heavy hydrogen isotope.

淡水湖沼相烃源岩生成的煤成气相对富集氢同位素氕，而海相烃源岩生成的煤成气则相对富集氢同位素氘。

"The case against ergocalciferol as a vitamin supplement" explains why D2 should not be used.

& ，对ergocalciferol作为一个维生素补充&的解释了为什么氘不应使用。

"Water from most natural sources contains about 0.015% deuterium oxide; this can be enriched or purified by distillation, electrolysis, or chemical processing."

大多数来自天然水源的普通水约含有0.015%的氧化氘，可透过蒸馏、电解或化学过程来提高或去除其含量。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。