Poisson laid the theoretical foundation of seismic wave.

奠定了地震波理论基础。

Question 18. What is the most destructive type of seismic wave?

问题18地震波中破坏力最强的波形是什么？

The reconstruction of seismic wave-speed distribution is nonlinear.

重建地下速度分布是一个非线性问题。

Question 19. Which seismic wave brings us shaking felt from an earthquake?

问题19地震中哪种波形会让我们感觉到震动？

The parameters of explosive seismic wave were measured by piezocrystal gages.

用压电晶体探头测量了爆炸时的地震波参数。