There are a number of alternative formulations of the reciprocity theorem.
还有许多别的互易定理的公式。
The integral expressions for scattered fields including the second-order scattering terms are given based on the reciprocity theorem.
在互易原理的基础上，得到了计入相邻目标二次散射的散射场的积分表达式。
Expressions of the coupling length and the coupling area of an antenna to electromagnetic waves excitation are deduced with the reciprocity theorem.
应用互易定理推导出了电磁波激励下天线的耦合长度和耦合面积的表达式，这两个物理量可以表征天线的响应特性。
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