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用BCS理论计算了稀土区偶偶核和奇A核的转动惯量．计算结果表明，尽管转动惯量的计算值系统地小于实验值，但实验上观测到的转动惯量奇偶差的大幅度变化能够用BCS理论定性地描述。这个结论与人们普遍认为的BCS理论给出的奇A核转动惯量应比相邻的偶偶核基态转动惯量大15％的看法相悖，但却证实了20多年以前Gregory和Volkov等人得出的结论，有助于人们在BCS平均场理论框架下理解正常形变核中出现全同带的现象。
The moment of inertia of even and odd A nuclei in rare earths was calculated by BCS theory. The calculated results show that although the calculated values of moment of inertia are systematically less than the experimental values, the large variation in the experimentally observed moment of inertia can be qualitatively described by BCS theory. This conclusion is contrary to the widely held belief that the odd A nuclear moment of inertia given by BCS theory is 15% larger than the moment of inertia of the adjacent even and even nuclear nuclei but confirms the conclusion reached by Gregory and Volkov et al. More than 20 years ago , Helps to understand the phenomenon of the same band in normal deformable nuclei under the framework of BCS average field theory.