Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
两个氢原子和一个氧原子结合组成一个水分子。
Water can be resolved [decomposed] into hydrogen and oxygen.
水可分解为氢和氧。
These devices then combine hydrogen and oxygen to make water and liberate electricity in the process.
然后这些装置将氢和氧合成水，并在这个过程中释放电力。
This is my report: One of the major problems in the Biramichi river is that the level of oxygen in the water is too low.
这是我的报告：比拉密契河的主要问题之一是水中的氧气含量太低。
The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacial ice.
随着大量的水通过蒸发被抽离，并以雪的形式沉淀形成冰川冰，海洋中氧同位素的比率就发生了变化。
In the laboratory, when the seal dives below the surface of the water and stops breathing, its heart beats more slowly, requiring less oxygen, and its arteries become constricted.
在实验室里，当海豹潜入到水面以下并停止呼吸时，它的心脏跳动得更慢，需要的氧气更少，动脉也会收缩。
Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.
在水中大多数氢原子和氧原子是稳定的，但这两个元素也有微量以较重的同位素形式存在。
A molecule of water consists of two atoms of hydrogen and one atom of oxygen.
水分子由两个氢原子和一个氧原子构成。
Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.
然而，这样的水对提高身体机能毫无用处，因为只有通过肺部才能将氧气吸入血液，从而被肌肉吸收。
When hydrogen sulfide reacts with the oxygen in the water, the result of that is sulfuric acid.
当硫化氢与水中的氧反应，得到的就是硫酸。
This gas is hydrogen sulfide, rises up and mixes with oxygen in the underground water that sits in the cracks and fissures in the limestone.
这种气体是硫化氢，上升后与石灰岩裂缝中地下水的氧气混合。
Almost all the oxygen in water is oxygen 16, but a few molecules out of every thousand incorporate the heavier isotope 18.
水中几乎所有的氧都是氧16，但每一千个分子中就有几个含有较重的同位素18。
Heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18.
当水从海洋表面蒸发时，往往会留下较重的同位素，所以剩余的海水会逐渐富含氧18这种同位素。
With its 10-meter-long pipe in the robot, people who are trapped in the fallen buildings will be able to get supplies including oxygen and water.
机器人体内有10米长的管道，被困在倒塌建筑物中的人们可以获得氧气和水等供应。
The ratio of oxygen-16 to oxygen-18 found in the calcite of a foraminifer's shell depends on the temperature of the water in which the organism lived.
在有孔虫壳的方解石中发现的氧-16和氧-18的比例取决于该生物生存处的水温。
The utility model relates to a forge and press combined type central water-cooled oxygen lance spray head assembly.
本实用新型涉及一种锻压组合式中央水冷氧喷枪喷头总成。
Water can be reduced to oxygen and hydrogen by electrolysis.
水通过电解可以分解为氧和氢。
Through photosynthesis, leaves use the power of sunlight to assemble sugars using only carbon dioxide, oxygen and water.
通过光合作用，树叶仅仅借助太阳能就能把二氧化碳，氧气和水转换成糖份。
The cobalt and phosphate form a thin-film catalyst around the electrode that then use electrons from the electrode to split the oxygen from water.
钴和磷酸盐在电极周围形成了薄膜型的催化剂，这些催化剂就利用电极发射的电子从水中分解氢和氧。
Which splits water into oxygen and the constituents of hydrogen, a proton and electron.
催化剂会把水分解成氧气和氢原子的构成部分：一个质子和一个电子。
The researchers say the carbon-iron-cobalt catalyst completed the conversion of hydrogen and oxygen into water, rather than producing large amounts of hydrogen peroxide.
研究者称碳铁钴复合催化剂能完全将氢气与氧气转化成为水，而不是产生大量双氧水的副产物。
The first of these involves splitting water into hydrogen and oxygen, a notoriously difficult thing to do because water molecules are so stable.
其中第一个步骤就是将水分解为氢和氧，这极其困难，因为水分子非常稳定。
Other Japanese automakers have been working to create fuel cell cars, which produce electricity through a chemical reaction between hydrogen and oxygen, with water the only by-product.
其它日本汽车制造商已经开始着手制造燃料电池汽车，这种汽车通过氧和氢的化学反应来发电，而这种化学反应的副产品只有水。
The next logical step would be a space telescope capable of picking up the chemical signatures of life, including the presence of oxygen, water vapour and carbon dioxide.
理论上讲下一步应该是发射能够观测化学信号的望远镜，以为生命的存在提供依据。有价值的信号包括氧气、水蒸汽和二氧化碳。
If we take hydrogen peroxide in the liquid state, it can break down to form water and oxygen.
如果我们有一些液态的过氧化氢，它会分解成水和氧气。
What makes the water on the moon different from water on Earth is that it contains the ingredients for water - hydrogen and oxygen - but is not yet water.
促使月球上的水与地球上的水不同的是月球含有水的成分- - - - - -氢和氧- - - - - -但是还不是水。
When it reaches the surface, the hydrogen combines with oxygen to form water, allowing solid white sulfur to precipitate into the ocean.
当它到达水面，氢与氧结合形成水，使纯白色的硫沉淀到海里。
Now, the LCROSS observations provide a handy explanation for the hydrogen: it's bound with oxygen to form water.
现在，LCROSS的观测提供了一个方便的解释：氢与氧结合，形成了水。
First, they considered the possibility that seasonal upwellings of toxic or oxygen-poor bottom water were responsible.
首先，他们考虑了有毒的或者无氧的底部水流的季节性上升造成这种灾难的可能性。
That life would have to survive on comparatively little oxygen and water, and would have to be very tolerant of methane。
这些生命要再氧气和水相对较少的环境下生存，而且要能够忍受甲烷。
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