本文讨论了关于边界电位作线性变化的正方形结构静电四极场；
We describe an exact quadrupole field with square cross-section in which the boundary potential varies linearly with position.
在电阻抗成像正问题研究中，研究了场域内电导率变化位置、大小对边界电位的影响。
In the study on forward problem of EIT, the effect of the position and area of electrical conductivity change in the field on the boundary potential was studied.
文中提出了一种用电磁场边界元法对电位法进行标定的理论标定方法。
A theoretical calibration method for potential system with electric field boundary element method was introduced.
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