利用对称性研究原子核这一复杂的微观系统可以帮助我们获得很多关于原子核的信息。1932年，海森堡在中子-质子核力对称性的基础上提出了同位旋的概念。在原子核结构对称性的研究越发深入的过程中，又演化出了价镜像核概念。本文将镜像核的对称性引入原子核的转动中进行研究，利用绝热约束和组态固定约束计算的协变密度泛函理论计算模型研究镜像原子核的形变，得到了镜像核⁷³Sr-⁷³Br 与⁷¹Kr-⁷¹Br的位能曲线与三轴形变参数。计算结果表明这两对镜像核⁷³Sr-⁷³Br与⁷¹Kr-⁷¹Br都具有很好的形变对称性，每对镜像核都有相似的基态以及高激发态的形变参数，引起镜像核对称性破缺的库仑力对于原子核的影响主要体现在能态之间的相对能量差之上。

The use of symmetry to investigate the intricate microscopic system of atomic nuclei can provide valuable information about nuclei. In 1932, Heisenberg introduced the concept of isospin based on the symmetry exhibited by the nuclear force between neutrons and protons. As we delve into studying the structural symmetry of atomic nuclei, we have developed concepts such as valence-mirror nuclei. This paper incorporates mirroring symmetries into rotational dynamics within atomic nuclei by employing adiabatic constraints alongside configuration-fixed constraints coupled with calculations using covariant density functional theory(CDFT) models to analyze their deformations. Potential energy curves and triaxial deformation parameters for mirror nuclei ⁷³Sr-⁷³Br and ⁷¹Kr-⁷¹Br are obtained. The results demonstrate that both pairs exhibit remarkable deformation symmetry, evidenced by similar deformation parameters in their ground states as well as highly excited states. The Coulomb force responsible for breaking this symmetry in mirror nuclei primarily manifests itself through relative differences in energy levels.