The reason why seismic wave forms of Wuyuan swarm change might be transition of underground medium from brittleness to flexibility that increases duo to increase of fluid component.

五原震群地震波形改变可能是由于地下介质流体成分增多柔性增强，由脆性向柔性过渡的原因。

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To study how the attenuation of vibration wave caused by traveling vehicle, we conducted a test survey along highway using three component detector and 24 trace engineering seismic apparatus.

对公路两侧不同车辆的振动情况进行了实验研究。 采用三分量检波器和24道工程地震仪进行测量。

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Improper initial value will result in errors of low frequency component, relative wave impedance and stratum thickness to cause pitfalls of seismic data interpretation.

初位选择不同会出现反演的多解性；初值选择不当，会导致低频分量、相对波阻抗及岩层厚度的错误，产生地震解释的陷附。

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