1.Very high densities, close to that of an atomic nucleus.
它的密度非常高，接近于一个原子核。
2.It used to be that the smallest particle of matter known to man was the atomic nucleus.
人们过去认识最小的构成物质的粒子是原子核。
3.Making new elements is just a byproduct of an effort to discover things about the atomic nucleus, Moody said.
穆迪说，新元素只是人们在努力研究发现与原子核相关物质时的副产物。
4.Their idea was that a normal star implodes until its core reaches the density of an atomic nucleus.
他们认为，正常的恒星必须在其核心密度增加到与原子核密度相当时，才会爆炸。
5.These high-energy gamma rays, detected by Fermi's Large Area Telescope (LAT), have wavelengths one-thousandth the size of an atomic nucleus.
这些“费米大天区望远镜（LAT）”所侦测到的高能伽马射线的波长仅相当于原子核大小的千分之一。
6.When the X-rays reach the cloud, they collide with iron atoms, kicking out electrons that are close to the atomic nucleus.
当X射线抵达星云便与铁原子发生碰撞，将靠近原子核的电子敲出。
7.The total angular momentum of an atomic nucleus .
原子核的角动量之总和。
8.The atomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium.
原子半径是平衡状态下原子核到最外层电子轨道的距离。
9.But it's really a tiny fraction of the size of an atomic nucleus.
但是它实际上只相当于一个原子核的一小部分那么大。
10.Using the difference between neutron and proton number in atomic nucleus, the "Element's Periodic Law of Three" .
通过原子核内中子数与质子数的差值——中质差，探讨构建“元素立体周期律”的可能性。