Secondarywaves travel more slowly and arrive after the P-waves.
次要波传播的更慢,发生在P波之后。
2
Successive positions of the wave front are then given by the envelopes of the secondarywaves.
因此波前的相继位置即为次波的包络面。
3
Results the calculation result shows that spherical surface of the conductor buried in sandy soil presents not only primary and secondary scattered waves but also multiple wave and creeping.