ultrasonic

n. 超声波

The doctors gave him an ultrasonic brain scan.

医生给他做了脑部超声波扫描检查。

An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain.

超声波心动描记器一种用来显示详细的大脑图象的仪器，利用超声波发送和反射的差异来测试并无伤无痛