An atom contains a tiny heavy nucleus.
一个原子含有一个微小而重的核。
The calculation result shows that for the scattering on light nucleus, there is no second diffractive maximum, but on heavy nucleus, there is a second diffractive peak.
计算结果表明，J粒子在轻核上的散射，没有出现第二个衍射峰；而J粒子在重核上的散射出现第二个衍射峰。
The theoretical models for investigating the fusion mechanism of heavy nucleus collisions and calculating the formation cross sections of superheavy nuclei have been introduced.
介绍并讨论了研究超重核合成的主要理论模型以及近年来在研究重核熔合机制和超重核合成理论模型方面的进展。
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）。
Heavy water gets its name because it contains deuterium, a form of hydrogen that has a neutron in its nucleus as well as the usual proton and thus weighs twice as much as the ordinary sort.
重水因含重氢而得名。重氢是氢原子的一种，其原子核中含有一枚中子，加之正常氢元素中的质子，重量为一般氢原子的两倍。
The proton, although it was heavy, would be repelled by nucleus, since they both have positive charges.
质子虽然很重，但要受原子核的排斥，因为它们都带正电荷。
The calculated results show that this method is also suitable to heavy, asymmetric nuclei, though obvious differences exist between the proton MOP and the neutron MOP in an asymmetric nucleus.
计算结果表明，这套方法在较重的非对称核中仍然适用，但是非对称核中的质子光学势及中子光学势有明显的差别。
The calculated results show that this method is also suitable to heavy, asymmetric nuclei, though obvious differences exist between the proton MOP and the neutron MOP in an asymmetric nucleus.
计算结果表明，这套方法在较重的非对称核中仍然适用，但是非对称核中的质子光学势及中子光学势有明显的差别。
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