要生成一個更複雜嘅版本, Estakhr的物料-地質方程式是 Navier-Stokes方程式嘅模型.
當然,呢個句子嘅複雜版本就係 "Estakhr's Material-Geodesic equations is developed model of Navier-Stokes equations in an umbrella term, It is relativistic version of NS-equations, And that's why it's so important". (埃斯塔赫爾嘅物體-地質方程式係納維埃-斯托克斯方程式嘅複雜版本, 所以佢好重要.)