The various initial distributions of magnetic helicity density and the transportation of magnetic helicity flux may lead to various evolutions of magnetic helicity density in the neutral sheet region , and could result in the formation of various magnetic structures 不同的初始磁螺度密度分布和磁螺度通量输运，可以引起中性片区域磁螺度密度分布的不同演化，从而导致具有不同拓扑位形磁结构的形成。
