• The direction of longest echo time is the direction of minimum earth stress, and the direction of greatest earth stress is perpendicular to it.

    回波时间最长方向最小地应力方向,最大地应力方向与之垂直

    youdao

  • The higher-frequency sounds are of little use for seismic imaging because they dissipate in the earth, contributing little to images based on the signals that echo up to the surface.

    此外,较高频率声音很少用于地震成像方面的,因为高频声音的能量消耗里,导致地面信号对于成像基本没有作用了。

    youdao

  • The higher-frequency sounds are of little use for seismic imaging because they dissipate in the earth, contributing little to images based on the signals that echo up to the surface.

    此外,较高频率声音很少用于地震成像方面的,因为高频声音的能量消耗里,导致地面信号对于成像基本没有作用了。

    youdao

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