Under the laws of quantum mechanics, the nuclei of atoms have shell-like structures analogous to the spheres in which given Numbers of electrons exist in certain orbits around the nucleus.

根据量子力学的法则，核子外部一定数目的核外电子以一定的圆周轨道运行形成球状壳结构。

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A year later, they successfully fused two atomic nuclei from these elements, creating their first nucleus of element 113, but it decayed in less than a thousandth of a second.

一年后，他们成功地让两个元素的原子核聚变，创造出了他们的首个113号元素原子核，但过了不到千分之一秒，它就衰变了。

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CEP65 can express efficiently in COS7 cells, and locates in cytoplasm and nuclei. It may be a kind of nucleus-associated protein.

CEP65可在COS7细胞中高效表达，其表达产物存在于细胞质和细胞核内；CEP65可能是一种核相关蛋白。

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What we're going to do in forming a molecule is just bring these two orbitals close together such that now we have their nucleus, the two nuclei, at a distance apart that's equal to the bond length.

我们在形成一个分子时要做的就是,把这两个轨道放到一起,这样我们有他们的原子核，两个原子核，它们之间的距离为键长。

麻省理工公开课 - 化学原理课程节选

Fusion is the process of forcing the nuclei of atoms so close together that they fuse into a nucleus of a new element. (Fission, of course, is the opposite: energy produced by splitting nuclei.) The new, fused nucleus weighs less than the original two.

FORBES: A Nuclear Hybrid

This is the point when neutrons released during the break-up of an atomic nucleus are more likely to hit and shatter other nuclei (thus releasing further neutrons), than to escape to the outside world where they merely generate Cherenkov radiation and tear up any living tissue that they pass through.

ECONOMIST: All over in a flash