本文讨论了太阳活动区和黑子区的无力场的演化。
In this paper the evolution of force-free magnetic field was discussed.
利用当时太阳活动区离化源的变化可以解释扰动的主要特征。
The main characteristics of the perturbations can be explained by the variations of the ionizing sources which were located in the solar active region.
因此，太阳活动区磁场测量和非势特征的研究对理解太阳表面上各种活动现象的物理机制和动力学过程有着十分重要的意义。
The measurement of solar magnetic field and the non-potential characteristic of solar activity are important to explain the physical mechanism and dynamical process of solar activity.
因此，太阳活动区磁场测量和非势特征的研究对理解太阳表面上各种活动现象的物理机制和动力学过程有着十分重要的意义。
The measurement of solar magnetic field and the non-potential characteristic of solar activity are important to explain the physical mechanism and dynamical process of solar activity.
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