Secondary waves travel more slowly and arrive after the P-waves.
次要波传播的更慢，发生在P波之后。
Successive positions of the wave front are then given by the envelopes of the secondary waves.
因此波前的相继位置即为次波的包络面。
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.
结果表明埋藏在沙土中的导体球面不仅仅存在一次和二次散射波，而且还存在多次波和爬行波。
However, not all the fault surface and the source directly linked to the movement, they also may be due to seismic waves caused by secondary impact.
但并不是所有的地表断裂都直接与震源的运动相联系，它们也可能是由于地震波造成的次生影响。
The other two, Primary (P) or compression waves and Secondary (S) or shear waves, penetrate the interior of the Earth.
另外两种，P或者“压缩波”以及S“剧烈波”，穿透地球内部。
However, not all the fault surface and the source directly linked to the campaign, they also may be due to seismic waves caused by secondary effects.
但并不是所有的地表断裂都直接与震源的运动相联系，它们也可能是由于地震波造成的次生影响。
However, not all the fault surface and the source directly linked to the campaign, they also may be due to seismic waves caused by secondary effects.
但并不是所有的地表断裂都直接与震源的运动相联系，它们也可能是由于地震波造成的次生影响。
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