资料来源 : pyDict

超声; 超声波

资料来源 : WordNet®

ultrasound
     n 1: very high frequency sound; used in ultrasonography
     2: using the reflections of high-frequency sound waves to
        construct an image of a body organ (a sonogram); commonly
        used to observe fetal growth or study bodily organs [syn:
        {sonography}, {ultrasonography}]