Because its driving signal is surface acoustic wave, thus it overcomes the shortcomings of complex structure, difficult fabrication and miniaturization in normal ultrasonic motor.
由于其驱动信号是可以由结构简单的叉指电极激发的声表面波，因而克服了一般的超声马达结构复杂，制造困难以及小型化困难等缺点。
Based on the theory of Zero-wave plane and the theory of Ultrasonic distance-measurement, introduces the ways how to measure the ship heaving signal according to the rule of 3-point forming a plane.
基于零波面理论，利用超声测距原理，介绍了3点定面测量船舶升沉位移的方法，设计了一种新型深海采矿船升沉信号采集系统。
The system uses ultrasonic wave as signal source, with the multi-probe multi-directions sweep, and fluid soak method test the gear.
系统以超声波作为检测信号源，采用多探头多方位扫描、液浸法的方式对齿轮进行检测。
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