可行方向法（简称为MFD）是用于求解非线性约束最优化重要的方法之一。
The method of feasible directions (MFD for short) is an important method for solving nonlin-early constrained optimization.
将非线性规划问题的单纯形加速法用于混合酸的线性滴定计算，同时优化酸浓度及有关条件常数，求出酸浓度的最优解。 讨论了影响单纯形法计算速度的因素。
The simplex optimization method about nonlinear programming problem has been used in the mixed acid linear titration and the effect of various factors on computative speed has been discussed.
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