By interaction between ultrasonic waves and elastic medium, it has carried much information of material, which are received in the form of ultrasonic echo signals.

　
英 美
  • 它是利用超聲換能器的振動(dòng)產(chǎn)生的超聲波與彈性介質(zhì)相互作用,從而攜帶大量有關(guān)材料性能的信息,這種信息以超聲回波信號的形式被接收到。
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