A mathematical model of oil and water two-phase non-Darcy fluid flow in the direction of normal of the ellipses with initial pressure gradient is taken into account, which is a nonlinear equation with moving boundary and is established according to concepts of perturbable ellipses and equivalent developing regulations.

基于擾動(dòng)橢圓的概念和等價(jià)的發(fā)展矩形的思想成人野外激情免费观看视频网站下载，建立了具有啟動(dòng)壓力梯度的油水兩相非達(dá)西橢圓二維滲流數(shù)學(xué)模型91最新国产中文字幕。