为了释放电子，必须使电子高速旋转而足以摆脱它们的原子核。
To free electrons, something has to make them whirl fast enough to break away from their nuclei.
我们讨论的是概率，但我们说的是最可能的半径，离原子核更远。
We are talking about probability, but what we're saying is that most probable radius is further away from the nucleus.
真正的杀手是，如果我们靠得太近，我们甚至会有两个原子核之间的排斥力。
The real killer is that if we get too close, we're even going to have nuclear-nuclear repulsion between the nuclei of the two atoms.
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).
这么大的原子核不可能是稳定的，但在足够长的时间内，在真空附近组装一个原子核以观察真空的衰变是可能的。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
那么氦原子核的电荷量是多少呢？
重氢是原子核中多一个中子的氢。
A deuterium atom is a hydrogen with an extra neutron in its nucleus.
用原子核变换方法获得的物质。
这是锂原子核加上一个电子。
它是一个具有六个单位正电荷的原子核。
但是我知道它的原子核中有11个质子。
中心有个带正电的原子核。
原子核的电荷量是多少？
这就是键轴，它就是两个原子核之间的轴。
So that is the bond axis it's just the axis between the two nuclei.
原子核都是携带正电，推动其结合相当之难。
Because nuclei are positively charged, they are mightily difficult to push together.
我们有一个在轨运行的电子和一个静止原子核。
它还有一个“原子核模式”，能阻止所有网页。
It even has a 'nuclear mode' which blocks all websites for as long as I want.
但还有第二个因素，那就是我们离原子核有多远。
But the second factor is how far away we are from the nucleus.
而原子核周围有10个电子。
而加速器可能产生核聚变，将原子核融合在一起。
But accelerators could potentially produce nuclear fusion, which fuses atomic nuclei together.
这些微粒通过增加云层内原子核量来加大云层密度。
The particles increase the density of clouds by increasing the amount of nuclei contained within.
打到原子核了就是背散射，如果打到框上。
It's not going to be a backscatter event if your ping-pong ball hits the frame or these strings, or the top part.
有原子核的面积,通过除以所有原子的,总面积。
So, here we have the area of the nuclei we'll figure out adding those all together versus the space of all of the atoms put together.
它并不只是简单地绕原子核旋转，而是同时进行公转和自旋。
It doesn't simply orbit the nucleus, but as it orbits it spins.
最后，研究人员用调频范围的无线波将自旋写在磷原子核上。
Then they used FM-range radio waves to “write” the spin onto the phosphorus nuclei, as explained by the University of Utah.
而元素的编号是依据元素原子核中质子的数量确定的。
还记得在这个离子中，在原子核周围，抵消它吸引力的电子更少。
Remember in the ion, we're going to have less electrons around to counteract the pull from the nucleus.
核聚变是发生在恒星内部的原子核融合，是地球上长期追求的目标。
Nuclear fusion - the melding of atomic nuclei that happens inside stars - is a long-sought goal on Earth.
太阳和星星就是日常生活中轻原子核结合时释放的巨大能量的证明。
The sun and stars are daily proof of the great energy released when light atomic nuclei join together.
核聚变中，小原子核相互碰撞，形成大原子核，释放能量。
Fusion involves colliding small atomic nuclei together to form larger ones, and thus releasing energy.
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