超声学 meaning in English

hypersonics
ultraphonics
ultrasonics

Ultrasonics - flow measurement systems - flow test object
超声学.流量测量系统.流量试验物体
Ultrasonics - pulsed doppler diagnostic systems - test procedures to determine performance
超声学.脉冲式多普勒诊断系统.测定性能的步骤
Ultrasonics ; dental descaler systems ; measurement and declaration of the output characteristics
超声学.牙齿除垢装置.产品性能说明及测试
Ultrasonics - flow measurement systems - flow test object iec 61685 : 2001 ; german version en 61685 : 2001
超声学.流量测量系统.流量试验目标
Ultrasonics - focusing transducers - definitions and measurement methods for the transmitted fields
超声学.调焦传感器.传输区的定义和测量方法

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