Then the waveforms in the window are performed with FFT and the formation wave energy is calculated in frequency domain.
然后对时窗内的波形作快速傅立叶变换，在频域内求地层波能量。
When using CBL-VDL logging information to carry out cement bond evaluation, formation wave energy is major sign to reflect the second interface cement degree.
在利用CB L-VDL测井资料进行水泥胶结评价时，地层波能量是反映第二界面水泥胶结好坏的主要标志。
Conclusion High energy shock wave inducing renal damage is associated with free radical formation, endothelin release, and decrease of renal plasm flow.
结论高能冲击波致肾脏损伤与自由基形成、内皮素升高引起肾血流下降有关。
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