如何解决以下警告问题

在仿真时总会出现如下的警告，请教是什么原因，该如何解决？谢谢
“the monitor loss(f=85) is only available for dielecteic or magnetic losses and will be ignored”
“the monitor current (f=85) is only available for dielecteic or magnetic losses and will be ignored”
“structure contains lossy materials or boundaries. Two-port reciprocity may produce inaccurate phase naluws”

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