...率放大器、声电转换、无线编码/解码、全桥驱动 [gap=691]Key word: Voice guide, Power amplifiers, Sound electric conversion, Wireless encoding/decoding, Full bridge driver ..
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超声波传感器是实现声电转换的装置，所以，又称为超声波换能器。
Ultrasonic sensor is an instrument which transform sound into electricity, therefore, it is also called ultrasonic wave transducer.
传统的检测地下管道漏水的方法是以声—电转换为基础，这使得灵敏度、深度和距离都受到很大限制。
To detect water leaking of underground tube, the traditional method relies on the sound-electricity transformation. Therefore, detection sensitivity, depth and distance suffer great limitation.
当声波与声-电转换器的主要测象限垂直时，其声波在主要测象限内产生的声-电电压最强。
When sound wave is perpendicular to the main measure quadrant of sound-electronic transducer, the most strong sound-electronic voltage will be produced.
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