overtone frequence

例句：

1. 1. Theovertone frequency of the sound waves is used to determine the distance between objects.
   声波的超音波频率被用来测定物体之间的距离。
2. 2. In medical imaging, overtone frequencies are used to create detailed images of internal organs.
   在医疗成像中，超音波频率被用来创建内部器官的详细图像。
3. 3. The overtone frequency of a tuning fork is used to measure the temperature of a liquid.
   用调音叉的超音波频率来测量液体的温度。