特征值下逼近 Eigenvalue approximation from below
逼近与下降测试 Approach and Landing Test ; ALT
广义最速下降逼近 Generalized steepest descent approximation
谱约束下矩阵最佳逼近 matrix approximation with spectrum constraint
本文给出了无界域上大规模凹二次规划的一种下逼近算法，并证明了算法的收敛性。
In this paper, a lower approximating algorithm of large-scale concave quadratic programming in unbounded domain is constructed.
本文给出了无界域上大规模凹二次规划的一种下逼近算法，并证明了算法的收敛性。
In this paper, a lower approximating algorithm of large-scale concave quadratic programming in unbounded domain is constructed. The convergence of the algorithm is discussed.
如果岩石与碎屑在逼近，跑到最近的避难处并藏起来(如果可能的话，躲在课桌，饭桌或其他坚固的家具下。)
If rocks and debris are approaching, run for the nearest shelter and take cover (if possible, under a desk, table, or other piece of sturdy furniture).
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