The method is firstly applied to solve the linear convection - dominated diffusion problems and the optimal l2 - error estimates of the unknown function c and the vector flux p are gained 此方法首先被用于求解線性對(duì)流擴(kuò)散問題,得到了關(guān)于未知函數(shù)c及伴隨函數(shù)p的最優(yōu)l ~ 2誤差估計(jì)。