pulse echo ultrasonics

例句：

1. 1.Pulse echo ultrasonics are used to diagnose heart disease.
   脉冲回声超声波用于诊断心脏病。
2. 2. Ultrasonics are used in medical imaging to create detailed images of internal organs.
   超声波在医疗成像中被用来创建内部器官的详细图像。
3. 3. The ultrasonics were used to detect the leaky pipe.
   超声波被用来检测漏管。