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张珩:互感平衡电桥,用于u不行,米波还行u段信号捡拾还得用定向偶合。另外为标定度盘必须至少准备三支假负载,分别是:50欧标定1也用于调零;75欧标定1.5 ; 100欧用于标定2 。负载可 .. (2014-01-20 01:37)
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