然而，在混合整数线性规划的框架下，模型的扩展十分困难。

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

youdao

然而，在混合整数线性规划的框架下，模型的扩展十分困难。

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

youdao