A mixed integer programming formulation for the off-line version of the problem has been proposed.
给出了问题的数学描述，并对其静态问题，构造了一个混合整数规划模型。
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Details, for example, from my several days' ride through the Montana Hi-Line, the plains near the Canadian border, are hazy, the towns I stopped in mixed up in my head.
The mixed-model assembly line is one of the applications of JIT production, because it can meet diversified demand of customers without the need for large product inventories.