... transducer loss factor 换能器损耗系数 transducer loss 换能器损耗 transducer noise voltage 换能器噪声电压 ...
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三相单向换能器具有损耗小，带宽大(30%)等优点，但是这种换能器的调整较困难。
SAW 3-phase unidirectional transducers offering advantages of. low loss and wide bandwidth (30%) have great difficulty in adjustment.
梳状换能器可看成若干叉指单元电端并联，声端首尾串联而成的网络，采用单向结构可降低采用这种结构的声表面波延迟线的损耗。
The comb transducer can be considered as the network of the parallel connection of some units of IDT electrical ports and the series connection of their acoustic ports.
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