本文在总结现有头模型建模方法的基础上，依据实际存在的头部组织电导率不均匀分布的情况建立了四层偏心球模型。
On the basis of current construction methods of head models, four-layer sphere model was constructed in this paper according to asymmetry prosperities of brain tissues.
均匀化温度愈高，平衡相溶解愈充分，合金的电导率下降愈多。
When the homogenization temperature increases further, more equilibrium phases are dissolved and the matrix, and the conductivity of the alloy decreases.
从电场均匀性方面来看，四种不同电导率材料的混响室，其电场均匀性均满足标准IEC61000 - 4 - 21的要求。
From the point of field uniformity, the field uniformity of reverberation chamber with each material can satisfy the requirement of Standard IEC61000-4-21.
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