While protons and neutrons can still be divided farther, electrons cannot.
为了获得稳定性,它释放能量粒子的方式可以改变质子和中子的数量,将其转化为不同的元素。
To gain stability,it releases energetic particles in a way that alters the number of protons and neutrons, transmuting it into a different element.
实验表明,在原子核内,质子和中子看起来远远超过它们应有的大小。
Experiments have shown that, inside a nucleus, protons and neutrons appear much larger than they should be.
然而,没有人知道质子和中子(合在一起称为核子)在原子内部的行为。
Still, no one knows how those protons and neutrons(together known as nucleons) behave inside an atom.
除了质子碰撞之外,科学家们还计划研究铅离子的最高能量碰撞,其中每个碰撞包含208个质子和中子。
In addition to proton collisions, scientists also plan to study the highest-energy collisions of lead ions,each of which contain 208 protons and neutrons.
例如,在1930中,物理学家普遍认为存在三个基本粒子:电子,质子和中子。
For example, in the 1930s physicists widely agreed that there were three fundamental particles:electrons, protons and neutrons.
越来越复杂的实验也表明,原子具有行星般的内部结构,核心是密集的质子和中子,被轨道电子包围。
Increasingly sophisticated experiments had also revealed that atoms had a planet-like internal structure,with a dense core of protons and neutrons, surrounded by orbiting electrons.
当然,那时的我并没有想到去追问这些个电子、质子和中子又是由什么构成的。
Of course it didn't occur to me then to wonder what electrons, protons and neutrons are made of.
早期宇宙中这种辐射的存在限制了重元素的形成,因为高能光子可以将核分解成质子和中子。
The presence of this radiation in the early Universe limited the formation of heavy elements,as high-energy photons can dissociate nuclei into protons and neutrons.
在汤川耦合虚拟粒子,后来被称为介子,介导所有的核子之间的力,包括质子和中子。
In the Yukawa interaction a virtual particle, later called a meson, mediated a force between all nucleons,including protons and neutrons.
我:“你看,质子和中子都由三个夸克组成。
Me:“You see, the proton and neutrons are made of 3 quarks.”.
这些质子和中子的数量与我上面所说的相对原子量相同,这显然不是巧合。
It's obviously no coincidence that these proton and neutron counts are the same as the relative atomic weights I quoted above.
第三,它不是由原子或它们通常的构件(即电子,质子和中子)组成,这有助于它的神秘性。
Third, it not composed of atoms ortheir usual building blocks(i.e. electrons, protons, and neutrons), which contributes to its mysterious nature.
科学家们继续研究质子和中子在自然界中可以存在的组合,即使它只是在短暂的瞬间。
Scientists continue to research what combinations of protons and neutrons can exist in nature even if it is only for fleeting fractions of a second.".
可以认为质子和中子一起形成系统中心的“太阳”或核。
Think of the protons and neutrons as together forming a“sun”, or nucleus, at the centre of the system.
所有这些原子又是由更小的粒子,如质子和中子构成的,而这些粒子中的很多还可以进一步分解。
These in turn are made up of smaller particles like protons and neutrons, many of which can be broken down even further.
质子和中子中约有99%的质量似乎无法解释。
About 99 percent of the masses of the proton and neutron seem to be unaccounted for.
这个想法是,诸如质子和中子之类的粒子可以被看作弦上的波。
The idea was that particles such as theproton and the neutron could be regarded as waves on a string.
当时,物理学家知道质子和中子构成了原子,但是他们也发现了其他许多神秘的粒子。
At the time,physicists understood that atoms are constructed from protons and neutrons, but they had also found many other mysterious particles.
质子和中子不稳定的凝聚体在分裂成更小且更稳定的碎片之前仅存在了几分之一秒的时间.
The unstable agglomerations of protons and neutrons lasted mere fractions of a second before they fell apart into smaller, more stable fragments.
今天,夸克从来没有被孤立过--它们总是被束缚成质子和中子。
Today, quarks are never seen in isolation,they are always bound into protons and neutrons.
当时他做了一些非常好的工作――但并不非常艰深,对于了解质子和中子的结构非常重要。
At one point he was doing some pretty good work- not terribly deep, but it was very important-on the structure of protons and neutrons.
不同于质子和中子,美重子的寿命极其短暂,Xi(b)*存在不到一秒钟就衰变成其它21个短命粒子。
Unlike protons and neutrons, beauty baryons are extremely short-lived- Xi(b)* lasted mere fractions of a second before it decayed into 21 other ephemeral particles.
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