Only then can they hope to describe conditions at the Big Bang, when all space and time was compressed into a volume far smaller than a proton.
只有那样他们才能指望描述大爆炸的情况，所有的空间和时间全部在那时被压缩成一个远小于质子的体积。
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）。
A proton is an elementary particle of matter that possesses a positive charge.
质子是带正电荷的物质的基本粒子。
Proton exchange membrane fuel cells use a perfluorosulfonic solid polymer film as electrolyte.
质子交换膜燃料电池采用全氟磺酸固体聚合物膜为电解质。
NMR spectra are often calibrated against the known solvent residual proton peak instead of added tetramethylsilane.
核磁共振谱通常是根据已知的溶剂残留质子峰进行校正，而不是添加四甲基硅烷。
The bimolecular proton-bound complex between benzyne and acetylene intermediate has been proposed.
苯炔和乙炔中间体之间的双分子质子键合复合物已经被提出。
Later on we could do this with a proton.
接着我们可以用质子来做。
That’s a proton collision played on marimba.
这是木琴演奏的一段粒子碰撞的声音。
OK, atomic hydrogen, one proton, one electron.
原子氢，单个质子，单电子。
Each proton (or neutron) has about two thousand times the mass of an electron.
每一个中子或者质子的质量都是一个电子的两千倍。
Which splits waterinto oxygen and the constituents of hydrogen, a proton and electron.
催化剂会把水分解成氧气和氢原子的构成部分：一个质子和一个电子。
So we get at the number of neutrons indirectly because we know the proton number here.
所以，我们可以间接得到中子数，因为我们知道质子数了。
This is then fed into a complicated QED calculation to obtain the radius of the proton.
把这个测量值代入一个复杂的量子电动力学(QED)计算公式然后得到质子的半径。
When a neutron inside an atom decays, it produces a proton, an electron, and a neutrino.
原子内的一个中子衰变后会产生一个质子、一个电子和一个中微子。
In the same way the proton and neutron should also have their corresponding antiparticles.
同样地，质子和中子也应该有对应的反粒子。
In July 2000, a Proton rocket launched the Russian-built Zvezda (Star), or Service Module.
2000年7月，质子号火箭将俄罗斯的“星辰”服务舱送上太空。
The advantage of hydrogen is its unrivalled simplicity: one electron circles a single proton.
氢的优势是其结构非常简单：一个电子环绕一个质子。
The very small is a small fraction of a proton and the very large is the universe itself.
小到光子的，一个组成部分，大到宇宙的本体。
The researchers think these may be able to work as proton-exchange membranes in their own right.
研究者们认为这些“完全的膜”其本身就具有交换质子的功能。
The fission process would be controlled using neutrons produced by a linear accelerator's proton beam.
该裂变过程会利用直线加速器质子束产生的中子加以控制。
Then they zap the results with a stream of particles from the laboratory's elderly proton synchrotron.
等一起就绪，他们便用实验室里的老式质子加速器产生某种粒子流，轰击云室中的大气层。
Attachment of a proton to the more polarizable gases therefore gives significant energy toward bonding.
因此，把质子结合到更可极化的气体上，会释放很多能量，利于成键。 当然，这要求有小的、电负性的共配物。
Proton beams are zipping around the world's largest particle collider after more than a year of repairs.
经过一年多的修整后，质子束流又开始在世界最大的粒子对撞机快速前进了。
They all have the same Z, the same proton number, but different A, which means number of neutrons varies.
有相同的Z，相同的质子数，但是不同的A，也就是中子数不同。
It works by cooking the uranium and its daughter products, called transuranics, with a focused proton beam.
它的工作原理是，用集中质子束烹煮铀及被称作铀后元素(transuranics)的子产品。
Until recently the best estimate of the proton radius was 0.877 femtometres with an uncertainty of 0.007 fm
直到不久之前，对质子半径最好的测量是0.877飞米（千万亿分之一分尺），误差为在0.007飞米。
Hydrogen, the lightest element, has a single proton whereas uranium, the heaviest naturally occurring one, has 92.
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。
The latest treatment - proton radiation therapy - involves a proton accelerator that can be as big as a football field.
最新的治疗-质子放射治疗-包括一个质子加速器，可以像一个足球场那样庞大。
Hopes are high that the new proton-smashing tool can lead to breakthroughs in scientists' understanding of basic physics.
人们对对撞机期望值很高，认为这个新的质子粉碎工具可以带领科学家对基础物理学的理解有所突破。
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