对称: symmetry; symmetrical线性: linear; linearity算子: operator对称性算子: symmetry operator闭线性算子: closed linear operator非线性算子: non linear operator; nonlinear operator拟线性算子: quasilinear operator双线性算子: bilinear map; bilinear operator线性算子: linear map; linear operator正线性算子: positive linear operator伴随线性算子: adjoint linear operator可闭线性算子: closable linear operator奇异线性算子: singular linear operator收缩线性算子: contractive linear operator完全线性算子: complete linear operator线性算子的谱: spectrum of a linear operator线性算子理论: theory of linear operators有界线性算子: bounded linear operator正规线性算子: normal linear operator对称线性方程: symmetric linear equations; symmetrical linear equation对称线性规划: symmetric linear programming对称线性规则: symmetric linear programming对称线性天线: symmetrical linear antenna完全连续线性算子: completely continuous linear operator线性算子的摄动: perturbation of linear operators
