For the abundant of noise in testing oil well depth with sound wave, it is difficult to locate the reflected sound wave.
在用声波测试油井油液面深时，反射声波受到大量杂波干扰，给接箍波和液面波的定位带来了极大的困难。
The transducer sends a sound wave signal and determines the distance by measuring the time between the transmission of the sound wave and when the sound wave is reflected off an object.
该传感器发出的声波信号，并决定通过测量之间的声波传输和时间的距离时，声波反射的对象。
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