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.
一切物质，不论它们是气体、液体还是固体，都是由原子构成的。
All substances, whether they are gaseous, liquid or solid, are made of atoms.
景天庚酮糖是由七个碳原子构成的酮糖。
一个不是由分子原子构成的某物
放射性物质由很多不稳定原子构成。
Radioactive materials are composed of atoms that are unstable.
物质由分子构成，而分子由原子构成。
物体由分子构成，分子又由原子构成。
分子是由原子构成的。
图1：这个图表显示的重元素和碳原子构成。
Figure1: This chart shows the heaviest elements and their atomic makeup.
脂肪像糖一样，也是由碳、氢、氧原子构成的。
Fats are made up of carbon, hydrogen and oxygen atoms, as sugars are.
氧气是双原子分子，即每个氧分子由两个氧原子构成。
The kind that we breathe is made of diatomic molecules, which means each molecule has two atoms.
研究者们已经找到了一种从碳原子构成的小圆筒中产生电力的方法。
Researchers have found a way to produce large amounts of electricity from tiny cylinders made from carbon atoms.
高密度材料通常由较大原子序数原子构成，例如金和铅。
Materialss with high densities often contain atoms with high atomic Numbers, such as gold or lead.
高密度材料通常由较大原子序数原子构成，例如金和铅。
Materials with high densities often contain atoms with high atomic Numbers, such as gold or lead.
高密度材料通常由较大原子序数原子构成，例如金或铅。
Materials with high densities often contain atoms with high atomic Numbers, such as gold or lead.
无论是固体、液体，还是气体，所有物质都是由原子构成的。
Any substance is made up of atoms whether it is a solid, a liquid or a gas.
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.
所有的都是由不计其数的原子构成，其中大多数原子结合成为分子。
All are built from numberless atoms, the majority of them united into molecules.
纤维蛋白原扩散到合金表面以形成络合物的形式与氧原子构成竞争吸附；
The fibrinogen diffusing to the surface of alloys suffered competitive adsorption with oxygen atom.
石墨烯是一种由碳原子构成的单层片状结构的材料，可以使电子高效地通过。
Graphene consists of a single layer of carbon atoms allowing the passage of electrons without any resistance.
例如苯乙酮和氘苯乙酮气味分子具有相同的分子结构，其中一个是用称为重氢的氘原子构成。
Odorants such as acetophenone and deuterated acetophenone, for example, have the same molecular structure; one is just built from a slightly heavier hydrogen atom, known as deuterium.
生物的分子不是由两三个原子构成的，而是成千上万原子以多种复杂的形式组合而成的。
The molecules of living things are made, not of two or three atoms, but of hundreds or thousands in different complicated patterns.
氢分子，是宇宙中最普通的分子，仅有两个原子构成，每个原子仅包含一个质子和一个电子。
Hydrogen, the most common molecule in the universe, is just two atoms-each with one proton and one electron.
如果你移除地球上所有由原子构成的每个人之间的空白空间，那整个世界的人口都可以装在一个苹果里。
If you were to remove all of the empty space from the atoms that make up every human on earth, the entire world population could fit into an apple.
那是碳原子链，事实上我们探测到一整套分子，由五个、七个和九个碳原子构成，那是个令人激动的时刻。
It's carbon chain, in fact we really detected a whole set of molecules, with 5, 7, and 9 carbon atoms, and that was an exciting time.
此外，隧道效应的存在对驻波激光场与凝聚原子构成的体系的态函数和能谱等一些动力学性质都有明显影响。
Moreover, the present result manifests that the tunneling effect can obviously affect the dynamics properties such as wave function, energy spectrum of the atom-standing wave laser field system.
大多数元素都是由叫做同位素的几种非常相似的原子构成，铁含有4种不同的同位素，其中铁-56的含量最高。
Most elements are made up of a variety of closely similar atoms called isotopes. Iron contains four different isotopes, of which the most abundant is iron-56.
这些叁名研究人员使用X 射线结晶学方法得到核糖体的叁维结构，在原子水准上分析了由几十万个原子构成的核糖体的结构。
The researchers used a method called X-ray crystallography to pinpoint the position of hundreds of thousands of atoms that make up the ribosome.
这些叁名研究人员使用X 射线结晶学方法得到核糖体的叁维结构，在原子水准上分析了由几十万个原子构成的核糖体的结构。
The researchers used a method called X-ray crystallography to pinpoint the position of hundreds of thousands of atoms that make up the ribosome.
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