acoustic frequency sounding
... acoustic formation factor 声波地层因数 acoustic frequency sounding 声波频率测深 acoustic hologram 声波全息照相 ...
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人工地震波、电磁波和声波的频率越高，分辨率越高，但衰减快，可探测深度也降低。
The higher the frequency of the artificial earthquake wave, electromagnetic wave and sonic wave, the higher the resolution, but the attenuation is very fast and the exploration depth is very shallow.
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