With symmetry of branch impedance matrix in reciprocity network the loop current equation that the loop impedance matrix is symmetrical is presented.

利用互易电路支路阻抗矩阵对称性，构造回路阻抗矩阵也对称的回路电流方程，得出一种证明互易定理的直观方。

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With symmetry of branch impedance matrix in reciprocity network the loop current equation that the loop impedance matrix is symmetrical is presented.

利用互易电路支路阻抗矩阵对称性，构造回路阻抗矩阵也对称的回路电流方程，得出一种证明互易定理的直观方。

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