ultrasonic particle monitor

例句：

1. 1. Ultrasonic waves are used to diagnose heart disease.
   超声波用于诊断心脏病。
2. 2.The ultrasonic detector is used in the medical field for non-invasive testing.
   超声波探测器在医疗领域用于非侵入性测试。
3. 3.Ultrasonic welding is a technique used to join metal parts together without using heat.
   超声波焊接是一种不使用热就能连接金属部件的技术。