飞机的燃料电池悬挂在左机翼上而氢罐悬挂在右机翼上。
The plane's fuel cell hangs from the left wing while the hydrogentank hangs from the right.
我想，你们可能认为第一主族，没有氢，而氢应该是最小的。
I mean, you would expect that the group one, absent hydrogen, would be the ones that would have the least.
而氢是水的重要组成元素，所以月球含水量相对较少也就理所当然了。
Since hydrogen is a key element of water, it stands to reason that the Moon possesses relatively little water.
此外，随着退火温度的提高，氢渗透时间和氢陷阱系数也增大，而氢的扩散系数则降低。
In addition, both hydrogen permeation time and trapping coefficient of hydrogen increase but the hydrogen diffusivity decreases in the steel with the elevation of annealing temperature.
由此产生的氢气可以用来给汽车的氢燃料电池补充燃料，而氢气和一氧化碳的混合则可以被用作“合成气体”的燃料。
Hydrogen produced could be used to fuel hydrogen fuel cells in cars, for example, while a combination of hydrogen and carbon monoxide can be used to create "syngas" for fuel.
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）。
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).
所以这个团队开发了一种催化剂，这种催化剂可以放置在烯甲烷电站的燃烧室里，同时电站可以生产大量氢而不需要很多的改造。
So the team has developed a catalyst it says could be placed in the combustion chamber of a methane-burning power plant which would allow it to produce hydrogen with little modification.
这种汽车有两个燃料槽，一个装有汽油，而另一个含有氢。
The car has two fuel tanks, one containing petrol and the other hydrogen.
总体来说，较重的原子在大气圈中沉积，而较轻的原子则存在于大气圈表面，这也是一些白矮星具有较纯净的氢和氦大气圈的原因。
In general, the heavier atoms in the atmosphere sink and the light ones remain at the surface, which is why some white dwarfs, for example, have mostly pure hydrogen or helium atmospheres.
太阳一类的恒星在其核心将氢融合成氦。而白矮星则是将其曾用作核燃料的所有氢原子都燃烧殆尽的恒星。
Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.
而随着宇宙的进一步冷却，这些质子与中子便有能力团聚一起并组成质量最小元素中的核子，这些元素即氢、氦与锂。
When it had cooled further, these protons and neutrons were able to get together to form the nuclei of the lightest elements-hydrogen, helium and lithium.
蓝色和紫色是来自较轻的气体比如氢和氦，而更低点的氮气能在绿色极光的底部添上红色的边缘。
Blues and purples are created by lighter gases such as hydrogen and helium, while low-level nitrogen can add red fringes to the bottoms of green auroral curtains.
汽车、火车、轮船及其他交通工具将使用氢动力燃料电池，而飞机将采用氢燃料。
Cars, trains, ships, and other forms of transportation would use hydrogen-powered fuel cells, and aircraft would run on hydrogen fuel.
再之外是色球层，这一层由于存在的氢元素而略呈红色。
After that is the chromosphere, a layer that looks reddish because of all the hydrogen found there.
当一颗类日恒星大部分的氢聚变为氦，氦又聚变成碳的时候，它就变得不再稳定，而膨胀成一颗红巨星。
When a star similar to the sun fuses most of its hydrogen into helium, then the helium into carbon, the star becomes unstable and puffs out into a red giant.
我们仍无法找出让氢燃料电池高效、安全、实用的方法，而混合动力车已是昨日之旧闻。
We still can’t figure out how to make hydrogen fuel cells efficient, safe and practical and hybrids/deisal cars are yesterday’s news.
而分解出氢的效率以重量计算可比其它太阳能热制程的效率高出一个数量级。
The gravimetric hydrogen production rate exceeds that of other solar-driven thermochemical processes by more than an order of magnitude.
紫外线成像显示出的绿色漩涡以及可见光形成的图像揭示了氢和硫磺气体的存在，它们受发自四边形的强紫外线的辐射而变热并形成等离子体。
Swirls of green in Hubble's ultraviolet and visible-light view reveal hydrogen and sulfur gas that have been heated and ionized by intense ultraviolet radiation from the Trapezium's stars.
此外，由于有太阳能电源以及氢能源电池组，它完全能够自给自足而不需要任何形式的地面电能补给。
Also, it's totally self-sustained, thanks to a solar energy and hydrogen fuel cell combo, and it doesn't require any kind of input from the ground.
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。
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.
千万年以来，人类的主要燃料是木头，燃烧木头的过程中，碳和氢的比率是10比1。相比较而言，煤在燃烧过程中这个比率是2比1，而石油的比率则是1比2。
Humanity's main fuel for eons was wood, which has a carbon-to-hydrogen ratio of 10 to 1 when burned; by comparison, that ratio is 2 to 1 for coal and 1 to 2 for oil.
虽然单独除去氧本身是困难的，氢和氧很容易结合成水，而水是可以加热蒸发除去的。
Although it would be difficult to remove the oxygen by itself, hydrogen readily combines with oxygen to form water, which can be heated to steam and easily removed.
氢是最轻的元素，原子核中只有一个质子，而铀这种自然形成的最重元素的原子核中有92个质子。
Hydrogen, the lightest element, has a single proton whereas uranium, the heaviest naturally occurring one, has 92.
而阴极则是无害的贮氢合金而非有害的镉。
The cathode, however, is composed of a harmless hydrogen-absorbing alloy instead of toxic cadmium.
海洋酸化还会进一步引起连锁化学反应：更多的氢离子意味着碳酸氢根离子多了，而碳酸根离子少了。
Ocean acidification has further chemical implications: more hydrogen ions mean more bicarbonate ions, and fewer carbonate ions.
环境保护署称，它的发现是基于对六种温室气体的极其严格科学评判而做出的，这六种气体包括：二氧化碳，甲烷，一氧化二氮，氢氟碳化物，全氟碳化物以及六氟化硫。
The EPA said its finding was based on a rigorous review of science on six greenhouse gases: carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride.
图中精美而多彩的环状炽热气体云(红色为氮，绿色为氢，氧为蓝色)描绘出了纤细的沙漏形状。
Here, delicate rings of colorful glowing gas (nitrogen-red, hydrogen-green, and oxygen-blue) outline the tenuous walls of the hourglass.
结果，生成的分子基本是是一种纯的而合成的合成氢类物质，与通用柴油的化学性质完全相同。
The result is a molecule that's basically a pure—but synthetic—hydrocarbon, which means it's chemically identical to regular diesel.
结果，生成的分子基本是是一种纯的而合成的合成氢类物质，与通用柴油的化学性质完全相同。
The result is a molecule that's basically a pure—but synthetic—hydrocarbon, which means it's chemically identical to regular diesel.
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