日面磁场的基本组成单元，其角直径不超过1弧秒。
... meteorological elements气象要素 magnetic elements磁元 acoustic elements声学元件 ...
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接着以磁元和黑子磁场为例，介绍现有的主要研究成果。
Thereafter, we introduce the main achievements with magnetic elements and sunspot magnetic fields as examples.
本文提出复标量磁位的有限元法计算变压器铁心中三维各向异性非线性磁场和损耗。
In this paper, a complex scalar magnetic potential finite element method is proposed to calculate the three dimensional anisotropic nonlinear magnetic field and iron loss in transformer cores.
对磁敏传感器和永磁磁钢的工作特性进行了研究。 通过有限元仿真分析，确定了磁敏检测结构的基本元件和主要结构参数。
The new plan of magnetic-sensing detection is presented, whose elements and structure parameters are selected with finite element numerical simulation.
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