Under-water oxygen-arc cutting technology is easy for operation and widely used.
水下氧弧切割技术是一种方法简单，应用广泛的技术。
Plummeting water oxygen levels due to a severe drought have led to thousands of fish dying along the Manaquiri River.
由于严峻的干旱导致的马拉·奎利河水中含氧量缺乏导致了河中数以千计的鱼死亡。
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The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacial ice.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。
Plant productivity is a measure of the rate of the photosynthesis process that green plants use to convert solar energy, carbon dioxide and water to sugar, oxygen and eventually plant tissue.
植物生产力是衡量光合作用过程速率的一种方法，绿色植物利用这一过程将太阳能，二氧化碳和水转换成糖，氧气，最终成为植物组织。
The researchers suggest splitting water into hydrogen and oxygen during the day whenever electricity from solar cells is not needed for anything else.
研究人员建议当白天太阳能电池中产生的电流不做它用的时候来把水分解成氢气和氧气。
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。
Instead it has to be manufactured by splitting water into hydrogen and oxygen, a process that consumes energy.
这种依靠人工的将水分离成氢和氧的过程也是需要消耗能量的。
They write that the colony should be next to a large ice cave, to provide shelter from radiation, plus water and oxygen.
他们写道，这个殖民地应该接近一个大冰洞，能避开辐射，并能增加水和氧气。
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。
The system runs on a green hydrogen peroxide propellant that leaves behind only water and oxygen, a solution not too far from the hydrogen peroxide in the common medicine cabinet.
系统使用只会产生水和氧气的过氧化氢环保推进剂，类似家庭常备医药箱里的过氧化氢溶液。
The other three are water, methane and oxygen - and now oxygen is the only one left to be observed in the atmosphere of a planet outside the Solar System.
另外三个生命标志是水、甲烷和氧气，然而现在只有氧气还未在太阳系之外的行星中被发现。
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。
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