短語詞組短語generalized burgers fisher equation 廣義burgersburgers type equation burgers 型方程burgers ' equation burger方程Burgers s equation 伯格斯方程Burgers 'equation KdVB方程Kdv -Burgers type equation 一Burgers型方程two dimensional burgers equation 二維burgers方程nonlinear burgers equation 非線性burgers方程 返回 Burgers equation