而大统一理论则预言在原子核中的核子将衰变，重子数守恒将被破坏。
However, the nucleons in nucleus will decay and baryon-number conservation may not be absolute according to the Grand unified theory.
核子密度分布是原子核的一个重要性质。
Nucleon density distribution is one of the most important characters of an atomic nucleus.
“平均核子能”是“原子核物理”中应该引入的一个新概念，引入这一概念的必要性以及如何引入这一概念是值得探讨的两个问题。
Introduction of average nucleonic energy is an new concept in nuclear physics. The necessity of introduction and the way how to introduce it are two questions worthy of discussion.
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