短語(yǔ)詞組短語(yǔ)doubly nodlinear degenerate parabolic equation 雙退縮非線性拋物型方程Doubly nonlinear degenerate parabolic equation 雙退縮非線性拋物型方程doubly degenerate parabolic equation 雙重退化拋物型方程nonlinear doubly degenerate parabolic equation 非線性雙重退縮拋物方程 返回 doubly degenerate