Linear programming is a single goal programming method, the goal function get the maximum or minimum on the basis of limit condition.

线性规划是一种单目标规划，根据有关的约束条件得出目标函数的最大值或最小值。

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On this basis, in order to minimize the two objectives of the transport costs to model, to convert it into a network flow model with a stratified, with the minimum cost maximum flow algorithm.

在此基础上以运输成本最小化为二级目标建立模型，将其转化成带有分层的网络流模型，用最小费用最大流算法进行求解。

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Then, at the basis of the relation of truncation error and related coefficients, a real-time RK4 formula with maximum stability region and minimum truncation error is deduced.

然后，根据截断误差与相关系数的关系，导出了具有最大稳定域最小截断误差的实时RK4公式。

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