ultrasonic flow超声波流量ultrasonicadj.超声波的ultrasonic non-destructive examination超声无损检测Ultrasonic guided wave testing technique超声导波检测技术ultrasonic seismic scattering tomography超声地震散射层析成象法Ultrasonic nondestructive flaw detection超声波无损探伤Ultrasonic therapy apparatus or supplies超声波治疗仪器或器械ultrasonic Doppler method testing system超声多普勒检测系统ULTRASONIC VELOCITY TEST SOFTWARE MODULE超声波测试软件模块Ultrasonic microwave assisted extraction超声-微波辅助提取ultrasonic blood vessel detection method超声血管检测法ultrasonic velocity measurement principle超声声速测定原理

1. The control parts of the digital ultrasonic welding machine are introduced.
   介绍了一种数控的超声波焊接机的控制方法。