Atoms of hydrogen are fused to make helium.
氢原子可熔合成氦。
Hydrogen is used extensively in industry for the production of ammonia.
氢气大量地在工业中被用于氨的生产。
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。
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。
Zinc displaces the hydrogen of dilute acids.
锌置换了稀酸中的氢。
It contained very little hydrogen and helium.
它含有非常少的氢和氦。
Hydrogen turns into Helium, which releases energy.
氢变成氦的时候会释放能量。
Water can be resolved [decomposed] into hydrogen and oxygen.
水可分解为氢和氧。
Stars like our sun fuse hydrogen in their cores into helium.
太阳一类的恒星在其核心将氢聚变成氦。
It could also be broken down into its component parts—oxygen and hydrogen.
它也可以按照组成部分被分解——氧和氢。
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。
In another demonstration, they analyzed hydrogen production in bacteria for the University of Washington.
在另一项演示中，他们为华盛顿大学分析了细菌中的制氢过程。
You might say, "Well, gee, why don't we just power our cars with hydrogen placed on an internal combustion chamber."
你可能会说：“好吧，哎呀，为什么我们不把氢气放在汽车内部的燃烧室，来驱动我们的汽车呢。”
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。
Technological improvements are needed so that wind, solar and hydrogen can be more feasible parts of the energy equation.
需要改进技术，提高风能、太阳能和氢能在能源等式中的可行性。
J.J. Balmer, who was a school teacher in the 1800s, was the first to describe these lines that could be seen from hydrogen.
J.J.Balmer，在19世纪是一名教师，他是第一个描述这些可以从氢气中看到的线条的人。
The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.
然后可以将氢气输入到存储系统中，并在需要附加或备用电源时用于发电。
Toyota says its fuel cell car FCHV-adv can travel 515 miles on a full tank of hydrogen, but it may not see mass production until 2016.
丰田公司说他们的燃料电池汽车FCHV-adv 装满一箱氢气能行驶820千米，但在2016年前可能不会投入量产。
He had a tube with electrodes potted in it filled with atomic hydrogen. And by applying a voltage, he was able to get the gas to glow.
他有一根装着电极的管子，里面充满了氢原子。通过施加电压，他能够使气体发光。
There are just two hydrogen atoms per cubic centimeter on average in space, which poses no threat to spaceships traveling at low speeds.
太空中平均每立方厘米只有两个氢原子，这对低速飞行的宇宙飞船不构成威胁。
By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。
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。
Data from a later mission indicates significant concentrations of hydrogen and by inference water less than a meter underground at both poles.
从后来的任务中得到的数据显示，在两极地下不到一米的地方有浓度相当高的氢，由此推断是水。
Therefore some scientists postulate that the Earth's earliest atmosphere, unlike that of today, was dominated by hydrogen, methane, and ammonia.
因此，一些科学家推断，地球早期的大气与现在的不一样，主要由氢、甲烷和氨构成。
This would involve using sulphur or hydrogen sulphide aerosols so that sulphur dioxide would form clouds, which would, in turn, lead to global dimming.
这包括使用硫或硫化氢气溶胶，使二氧化硫形成云层，进而导致全球变暗。
They have these special organs that collect the hydrogen sulfide and carbon dioxide and then transfer it to another organ, where billions of bacteria live.
他们有这些特殊的器官来收集硫化氢和二氧化碳，然后把它们转移到另一个器官，那里有数十亿的细菌。
The major difference is that Allende is depleted in the most volatile elements, like hydrogen, carbon, oxygen, nitrogen, and the noble gases, relative to the Sun.
主要的差别是，相比于太阳，阿连德陨石缺失了大部分的挥发性元素，例如氢、碳、氧、氮和稀有气体。
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).
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）。
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