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。
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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