Many experiments on low cut filter were carry out to meet the requirement that balance of high frequency energy and lowfrequency energy is necessity for high resolution seismic exploration.
根据高分辨率地震勘探对高低频能量均衡的要求，对低截滤波进行了多次试验。
2
The attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a lowfrequency on the exploration seismic band.
纵波的衰减系数在地震频带内基本上呈线性变化，而横波的衰减系数在地震频带内除低频外基本保持稳定。
3
Celestial gravitational wave source and the exploration to lowfrequency gravitational wave have also been discussed.