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    ²¨  wave

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    ³¬Éù²¨  ultrasonic wave

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    ÇòÃæ²¨spherical wave

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    ²¨ÐÍ  mode

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    ÅÀ²¨  creeping wave

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    °å²¨  plate wave

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    ÅòÕͲ¨  dilatational wave

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    Ťת²¨  torsion wave

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    °ô²¨  bar wave

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    Âö³å³¤¶È  pulse length

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    ²¨³¤  wave length  

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    ³¬Éù³¡ultrasonic field  

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    Éùѹ  sound pressure

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    ·Ö±´(dB)decibel

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    ½ü³¡  near field

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    ·´ÉäϵÊý  reflection coefficient

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    ͸ÉäϵÊý  transmission coefficient

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    Íù¸´Í¸¹ýÂÊ  echo transmittance Of sound pressure

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    ͸Éù²ãsound transparent layer

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    ÂÓÉä½Ç  grazing angle

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    Í·²¨head wave

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    ÉùÉ¢Éä  sound scattering  

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    ÉùÈÆÉä  sound diffraction

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    Ë¥¼õattenuation  

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    ×ÜË¥¼õ  total attenuation

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    Ë¥¼õϵÊýattenuation coefficient

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    ÎüÊÕ  absorption  

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    »ùƵ  fundamental frequency

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    гƵ  harmonics  

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    ³¬ÉùƵÆ×  ultrasonic spectroscopy

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