ultrasonic examination

例句：

1. 1. Ultrasonic waves are used in medical imaging to create images of internal organs.
   超声波用于医学成像，以创建内脏器官的图像。
2. 2.The ultrasonic detector is a device that can detect the presence of objects in water.
   超声波探测器是一种可以检测水中物体存在的设备。
3. 3.Ultrasonic cleaning uses high-frequency sound waves to remove dirt and grime from surfaces.
   超声波清洗使用高频声波从表面去除污垢和污渍。