ultrasonic field

例句：

1. 1. The ultrasonic field is used to detect defects in metal parts.
   超声波场用于检测金属零件的缺陷。
2. 2.Ultrasonic fields are commonly used in medical imaging.
   超声波场在医学成像中常被使用。
3. 3.The researchers found that the ultrasonic field could improve the accuracy of their measurements.
   研究人员发现，超声波场可以提高他们测量的准确性。