水分子由两个氢原子和一个氧原子构成。
A molecule of water consists of two atoms of hydrogen and one atom of oxygen.
两个氢原子和一个氧原子结合组成一个水分子。
Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
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。
There are just two hydrogen atoms per cubic centimeter on average in space, which poses no threat to spaceships traveling at low speeds.
塑料中的碳原子呈饱和态，与两个氢原子相结合。
The carbon atoms in the plastic are saturated, having bonded with two hydrogen atoms.
水分子由两个氢原子和一个氧原子组成。
The water molecule is made up of two hydrogen atoms and one oxygen atom.
人们说水含有两个氢原子和一个氧原子。
Water is spoken of as containing two atoms of hydrogen and one atom of oxygen.
一个水分子等于两个氢原子和一个氧饭子。
One molecule of water equals two atoms of hydrogen and one atom of oxygen.
本质上，它只能允许我们,和两个氢原子成键。
Essentially it would only allow for us to bond to two hydrogen atoms.
由氮原子与两个氢原子结合形成的化学基团。
A chemical group comprising nitrogen bound to two hydrogen atoms.
一个水分子是由两个氢原子和一个氧原子组成的。
A molecule of water is made up of two atoms of hydrogen and one atom of oxygen.
当两个氢原子相遇并彼此结合在一起，便形成了氢分子。
H2 is formed when two hydrogen atoms come together and bind to one another to make a molecule.
脱氢酶催化两个氢原子从底物到NAD和NADP的转移。
Dehydrogenases catalyze the transfer of two hydrogen atoms form substrates to NAD and NADP.
如果两个氢原子与一个氧原子结合，就可以得到一个水分子。
Combining two atoms of hydrogen with one of oxygen, you will get a molecule of water.
两个氢原子构成了一个极性氢分子，一个略带正极，一个略带负极。
The two hydrogen atoms form a polar molecule, that is, one with a slightly positive end and one with a slightly negative end.
两个氢原子核融合产生的一克产品能够产生相当于11吨煤炭产生的能量。
One gram of the products from the fusion of two light atomic nuclei could generate as much energy as 11 tons of coal.
我们知道，一个水分子是由两个氢原子和一个氧原子组成的，它的分子式表示为h2o。
We have learned that water is made up of two atoms of hydrogen and one atom of oxygen, which we describe by the formula H2O.
而要讨论两个氢原子，我们只需要把它乘以二，因此应该是负的，2624，千焦每摩尔，这就是单个的氢原子的情况。
If we want to talk about two hydrogen atoms, then we just need to double that, so that's going to be negative 2 6 2 4 kilojoules per mole that we're talking about in terms of a single hydrogen atom.
原子结合形成分子。分子是一切物质可以被分割的最小单位。例如：分解水分子后，水就不再存在，剩下的只是构成水的原子——一个氧原子和两个氢原子。
When you break up a molecule of water, for example, you no longer have water at all, but only the atoms of which water is made — one atom of oxygen and two of hydrogen.
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。
Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.
那么，我们看到两个分开的氢原子所具有的能量,比原子中没有电子时更低。
So, we see that the two h atoms separate have a certain energy that's lower than when the electron's not with the atom.
如果我们考虑,两个碳原子之间的z成键轴，我们可以画出sp杂化轨道的交叠，我们也可以画出和氢原子的成键。
So, if we think about this z bonding axis between the two carbon atoms, we can picture overlap of those s p hybrid orbitals, and then we can also picture bonding to hydrogen.
现在这是两个分别独立的氢原子。
然后我们从氢原子那得到了两个电子。
这是从教科书上复制下来的图表，这里有两个电极进来，这是气体管中的氢原子。
This is the diagram taken right from your text, there are the two electrodes coming in and this is atomic hydrogen in the gas tube.
脂肪酸和醇类很相似，它有着大量的氢原子和碳原子，以及数量很少的氧原子(它还有两个氧原子而非一个)。
Like alcohols, fatty acids are molecules that have lots of hydrogen and carbon atoms, and a small amount of oxygen (in their case two oxygen atoms, rather than one).
当我们增大两个电极之间电压,我们有-我们可以把氢气2,分解成单个的氢原子，不仅这样，还能激发原子。
When we increase the potential between the 2 electrodes that we have in the tube -- we actually split the h 2 into the individual hydrogen atoms, and not only do that, but also excite the atoms.
每个氢原子都有两个电子，这是一个令人满意的体系。
And so, each hydrogen has access to each electron, and now we have a satisfied system.
然后研究人员推动这个冷却的云斑，并进一步把反质子压缩，以致可以用一个相似大小的中子云来与它相重叠，就在那时，两个粒子（反质子和中子）成对地形成了反氢原子。
Then the researchers nudged this cloud of cold, compressed antiprotons so it overlapped with a like-size positron cloud, where the two particles mated to form antihydrogen.
然后研究人员推动这个冷却的云斑，并进一步把反质子压缩，以致可以用一个相似大小的中子云来与它相重叠，就在那时，两个粒子（反质子和中子）成对地形成了反氢原子。
Then the researchers nudged this cloud of cold, compressed antiprotons so it overlapped with a like-size positron cloud, where the two particles mated to form antihydrogen.
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