The paper probes into the solution, by means of the matrix elementary transformation, of the non-elementary feasible base of linear program.
对用矩阵的初等变换求线性规划的无初始可行基问题进行了探讨。
The microstructure of the aluminum base alloys is the soft Sn phase particles distributing on the hard matrix(Al-Sn solid solution).
该合金的显微组织为硬的铝锡固溶体基体上分布着软的锡相质点。
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