It was analyzed and calculated through final element analysis (FEA) and the profiles of tile magnetic field and corves of magnetization were plotted.

并通过有限元方法对其进行算，绘制了该机的磁场布图和磁化曲线簇。为该机进一步、改良提供了重要的依据。

Angle this magnet withershins to an angle that is the multiple of 5o, then measure its magnetizing remanent magnetization curves along H direction.

将该半球的左半部成18个5o的瓣，按5o间隔逆时针转动，在原磁场方向测量磁化剩磁曲线，得到一系列磁化剩磁曲线。