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当研究者核对已经出版的同位素的数据时，他们发现查到的值和测量到的衰变速率不一致，而这个速率被物理学家假定是一个物理常量。
As the researchers pored through published data on specific isotopes, they found disagreement in the measured decay rates - odd for supposed physical constants.
最新研究发现原子核对称能与平均的能级密度和同位旋矢量势直接相关。
Recently it was found that the nuclear symmetry energy can be directly associated with the mean level density and an iso-vector potential.
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