声波

acoustical wave的用法和样例:

例句

  1. This wave of excess density is sound.这种过剩密度的波就是声波。
  2. The tweeter emits the sound wave, then the capacitor microphone receives the echo.其声波由电动扬声器发射,声波接收采用电容传声器。

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backward acting decoder
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total dynamic head
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tzannis
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