The geological survey should include the seismic velocity structure in the medium above the bedrock besides the active fault survey etc.
地质调查除活断层等内容外，基岩以上的地质构造以及地震波速结构的调查也是必要的。
Forward modelling result indicates that seismic characteristic explained in time-section has velocity structure of fan delta-turbidite.
正演模拟结果表明在时间剖面上解释的地震特征具有扇三角洲浊积岩的速度结构。
Seismic PKP arrivals are sensitive to P velocity structure in the lowermost mantle.
PKP震相包含了下地幔底部P波速度结构的重要信息。
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