The previous view was that when the sandstone contains oil, the velocity will reduce, and the well oil-bearing reservoir should show weak amplitude feature in the seismic section.
过去一直认为：砂岩含油气后，速度降低，含油性好的储层在地震剖面上就表现为弱振幅特征。
The waveforms 'amplitude character will be more distinct through accelerations 'feature extraction, and this is propitious to rail deformation detection.
对加速度进行特征提取，可以使得波形的幅度特征更加明显，有利于进行轨道故障的检测。
The telluric resistivity anomaly of moderate strong earthquake has a complicated feature, the length of the anomaly duration is only 60-90 days, the amplitude of the anomaly is 1-2%.
研究表明，中强地震地电阻率异常特征非常复杂，异常的时间一般只有60—90天，异常的幅度也只有1%—2%。
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