投影模 meaning in Chinese

projective module

In chapter three , we consider first order generalized difference scheme for linear sobolev equation in two dimensions . lp and w1 , p - norm error estimates of the ritz - volterra projection u - vhu and w1 , p - norm super error estimate of uh - vhu are made , so we obtain lp and w1 , p - norm error estimates of u - uh
第三章考虑二维线性sobolev方程的一阶广义差分格式，建立ritz volterra投影模误差估计和的模超收敛估计，从而得到的最优模误差估计