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本文介绍了一种用于多波节复合弯曲振动换能器的穿孔板，并对穿孔板的阻抗变换机理进行了理论分析。本文还对这种换能器的性能进行了测试，并将其用于超声料位仪中，获得了较满意的应用效果。
This paper introduces a perforated plate for multiwave composite flexural vibration transducer, and theoretically analyzes the impedance transformation mechanism of perforated plate. In this paper, the performance of this transducer was tested and used in ultrasonic level gauge to obtain more satisfactory results.