1.  sound wave
2.  acoustic wave
3.  sonic wave
4.  elastic wave

• 1. 声波: sound wave | sonic wave | Audio waudio-videoeform | sound wave
• 2. 超声波: ultrasonic wave | ultrasound | supersonic wave | UT
• 3. 超声波焊接: ultrasonic welding | ultrasonic soldering | Ultrasonic Weldable | supersonic welding

更多释义

• 1.我做了超声波扫描，检查妊娠情况。
  I had an ultrasound scan to see how the pregnancy was progressing.
  dict.yoduao.com
• 2.超声波扫描显示她怀了双胞胎。
  Ultrasound showed she was expecting twins.
  dict.yoduao.com
• 3.你听不到这么高频率的声波。
  You can't hear waves of such a high frequency.
  dict.yoduao.com

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