quadratic mix二次拌和quadraticadj.二次的n.二次方程式；二次方程式论quadratic auto-regression二次自回归quadratic performance index二次型性能指标Quadratic Wiener functional二次Wiener泛函quadratic orthogonal design二次回归设计quadratic eigenvalue problem二次特征值问题quadratic assignment problem二次分配问题quadratic uniform B-spline二次均匀B样条曲线quadratic mutual information二次互信息quadratic two-way location二次双向定位quadratic convex programming二次凸规划