Calculation adopted to calculate values is FDM(finite difference method). Grid and limited nodes are used to simulate the whole magnet while the effect of excessive layer is simplified as the function of the limited nodes on both sides of the interface. Thus the constant, whose unit is the same to the one of the exchange constant in block,plays its role in computational process among joints only which is not a breach of the specific physical image.

求大神帮忙翻译一下这段话：由于计算方法在数值计算上用的是有限差分法并且是用网格和有限的节点来模拟整个磁体，将过度层的影响简化为界面两边的有限的节点的作用，所以这个常数仅仅在节点间的计算过程中起作用，单位与块体的交换常数单位相同，并没有违背具体的物理图像.
The constant functions only in the calculation of nodes, with the same unit as that of block exchange constant and so not breaching the specific physical image, since the calculation is finite difference method and uses grids and limited nodes to simulate the whole magnet, simplifying the effect of excessive layer into that of the limited nodes on both sides of the interface.

何谓 "过度层" ?
  十边形用六边形约, "过度" = "多余"  ( excess ) ??
  还是 "内层"  ( internal layers ) ??

"块体的交换常数"  起什么作用 ??
你用另一  "这个常数"  好象爱因斯坦用 "宇宙学常数"  敷衍交代

Because the calculation method on the numerical calculation with the finite difference method and grid and limited number of nodes to simulate the whole magnet, simplified interface on both sides of the limited impact of excessive layers of nodes, so this constant only between nodes during calculation work, units and blocks have the same Exchange constants, units, and not contrary to the specific physical image.