氢与氧化合成水。
氢被认为是未来重要的能源载体。
水是含有氢元素和氧元素的化合物。
Water is a compound containing the elements hydrogen and oxygen.
水是含有氢元素和氧元素的化合物。
Water is a compound containing the elements of hydrogen and oxygen.
氢变成氦的时候会释放能量。
太阳一类的恒星在其核心将氢聚变成氦。
Stars like our sun fuse hydrogen in their cores into helium.
它含有非常少的氢和氦。
它也可以按照组成部分被分解——氧和氢。
It could also be broken down into its component parts—oxygen and hydrogen.
锌置换了稀酸中的氢。
水由氢与氧化合而成。
水可分解为氢和氧。
Water can be resolved [decomposed] into hydrogen and oxygen.
另一种选择是通过将其转化为氢燃料来储存能量。
Another option is to store the energy by transforming it into hydrogen fuel.
从该液体中最先逸出的气泡是空气和氢的混合物。
The first bubbles to escape from the liquid are a mixture of air and hydrogen.
水含有氢和氧。
然后这些装置将氢和氧合成水，并在这个过程中释放电力。
These devices then combine hydrogen and oxygen to make water and liberate electricity in the process.
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。
In another demonstration, they analyzed hydrogen production in bacteria for the University of Washington.
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。
Technological improvements are needed so that wind, solar and hydrogen can be more feasible parts of the energy equation.
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。
By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
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。
Therefore some scientists postulate that the Earth's earliest atmosphere, unlike that of today, was dominated by hydrogen, methane, and ammonia.
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。
Data from a later mission indicates significant concentrations of hydrogen and by inference water less than a meter underground at both poles.
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。
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.
氢与氧化合成水。
面包含有碳水化合物，这是一种由碳、氢和氧组成的化学物质。
Bread contains carbohydrates, which are chemicals made up of carbon, hydrogen, and oxygen.
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).
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).
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