Then the dual integral equations of the venical vibration of a rigid circular plate on a fluid-saturated poroelastic half space are established according to the mixed boundary permeability condit.
用积分变换和积分方程研究多孔饱和半空间上刚性圆板的垂直振动问题。
A mesh membrane does not contain the fluorine, and has the advantages of simple preparation method, high permeability of pore space and good oil-water separation effect, and corrosion resistance.
该网膜不含氟，制备方法简单，孔隙通透率高，油水分离效果好，并具有耐腐蚀性能。
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