The second chapter gives a network capacity expansion model on demand.

第二章主要研究了网络容量按需扩张的模型。

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The CTM model of brand expansion is built.

构建了品牌扩张的CTM模型。

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However, it is quite difficult for the expansion of model under the MILP framework.

然而，在混合整数线性规划的框架下，模型的扩展十分困难。

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However, it is quite difficult for the expansion of model under the MILP framework.

然而，在混合整数线性规划的框架下，模型的扩展十分困难。

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