approximationn.接近；近似；近似值approximation space of generalization广义近似空间approximation by semi-infinite slopes半无限斜线逼近approximation method of interval number区间数逼近法APPROXIMATION THEORY AND ITS APPLICATION逼近论及其应用approximation method by variational matrix变分矩阵近似法Approximation for Weak Hyperbolic Manifolds眼眶遮挡物Approximation Principal Axis Direction Method近似主轴方向法approximation by Hermite interpolation polynomials轨道能量,轨函能量approximation by Lagrange interpolation polynomials拉格朗日插值多项式逼近