1.
Sounds are classified into two kinds: sonic and ultrasonic.
声波分为两类，即普通声波与超声波。
2.
noiseless ultrasonic washer
无噪声超声波清洗器
3.
ultrasonic generator
超声波振荡器超声波发生器
4.
Ultrasonic Density Meter Design Based on Ultrasonic Echo Attenuation Theory
基于超声波回波衰减理论的超声波浓度计设计
5.
Design for Frequency-modulated Ultrasonic Generator in Ultrasonic Bonding Field
超声键合变频式超声波发生器的设计
6.
portable ultrasonic thickness meter
携带式超声波测厚仪
7.
automatic ultrasonic testing device
自动超声波探伤装置
8.
real-time ultrasonic particle monitor
实时超声波杂质监测仪
9.
ultrasonic examination of urogenital system
泌尿生殖系超声波检查
10.
Doppler echocardiogram
多普勒超声波心动图
11.
ultrasonic particle monitor
超声波机械杂质监测仪
12.
PUS (Passive Ultrasonic Sensor)
被动式超声波传感器
13.
digital ultrasonic thickness gauge
数字式超声波测厚仪
14.
supersonic wave Doppler diagnosing instrument
超声波多普勒诊断仪
15.
ultrasonic mode changer
超声波振动模式变换器
16.
non-metal ultrasonic detector
非金属超声波探测仪
17.
supersonic heterodyne receiver
超声波外差式接收机
18.
ultrasonic concrete tester
超声波混凝土测试仪