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系统地介绍了研究多层超声压电传感器中所采用的计算方法．并结合实例对传感器插入损失和阻抗频率特性进行了计算，计算结果与实测结果吻合较好．
This paper systematically introduces the calculation method used in the research of multilayer ultrasonic piezoelectric sensors. Combined with examples, the insertion loss of the sensor and impedance frequency characteristics are calculated. The calculated results are in good agreement with the measured results.