fig4

Figure 4. (A) The input sinusoidal wave; and the recorded wave velocities at (B) point A1; (C) point A2; (D) point A3; (E) point A4; and (F) point A5, respectively.
Figure 4. (A) The input sinusoidal wave; and the recorded wave velocities at (B) point A1; (C) point A2; (D) point A3; (E) point A4; and (F) point A5, respectively.
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