在这个设定中，氢不再是稳定的，但是其更重些的同位素氘和氚却是稳定的。
In this scenario, hydrogen would no longer be stable, but its slightly heavier isotopes deuterium or tritium could be.
最好的核聚变材料有两种，即氢的同位素——氘和氚。
The best fuels for fusion are two types, or isotopes, of hydrogen - deuterium and tritium.
它使用两种类型，或称同位素，的氢——氘和氚。
Two types, or isotopes, of hydrogen are used - deuterium and tritium.
研究人员利用所谓的离子显微镜来比较月球岩石中正常的氢元素含量及同位素氘的含量，元素氘比氢多带一个中子。
The researchers used what's called an ion microscope to compare the amount of normal hydrogen in the moon rocks to the amount of the hydrogen isotope deuterium, which carries an extra neutron.
在半重水的水分子中，一个氢原子（H）被一个称之为氘（D）的氢原子的同位素所取代。
In a semiheavy water molecule, one hydrogen atom (H) is replaced with a heftier version called deuterium (D).
其中放置了一个更微小的氘(氢的一种同位素)燃料丸。
It contains a tiny pellet of fuel made from an isotope of hydrogen called deuterium.
氘是氢的同位素，在地球上的海洋中广泛存在，其质量较重，很难逃离金星大气。
Deuterium is a heavier form of hydrogen that is common in Earth's oceans and that would have too much mass to escape Venus' atmosphere.
原子质量数大于1的氢的同位素；氘或氚。
An isotope of hydrogen with mass number greater than 1; deuterium or tritium.
氘是普氢较重的、稳定同位素。
Deuterium is a heavier and stable isotope of ordinary hydrogen.
包裹体同位素分析结果显示溶蚀孔、缝充填物的（D值较高，形成于氘富集的热卤水环境。
The result of isotope in the inclusion show the (D value is high, so the filled matter formed under the hot-bittern surroundings.
不同季节高原高山冰雪的溶融，可以明显地影响地表径流和浅层地下水的同位素组成及氘过量参数的变化。
The ice and snow melt of different seasons in high mountains can obviously affect the variation in isotope composition and deuterium excess parameters of surface flow and shallow groundwater.
氘氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2。
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2.014.
氘氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2。
An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2.014.
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