第20行的目标函数要对食物的总体成本实现最小化，该值是每个决策变量(食物数量)乘以每单位食物成本的结果。
The objective function on line 20 minimizes the total food cost as the total of each decision variable (amount of food) multiplied by that food's cost per unit.
网络的功效评价是网络性能的重要指标之一，它表示一定时期内单位管理成本所产生的目标效果。
Network efficiency is a major index for the evaluation of network performance, which reflects the target effect produced by unit management cost within a certain period.
以单位发电量最低成本为目标函数，建立了燃气-蒸汽联合循环发电系统的热经济学优化模型。
Taking the minimum cost per unit power generation as the objective function, a thermo-economic optimization model for gas and steam combined cycle power generation system is established.
这就需要施工单位在实践中不断的总结和提高成本控制和索赔的方式和方法，以保证项目成本目标的实现。
This will require the construction units in the practice of constantly review and improve cost control and claims the ways and means to ensure that the project cost goals.
这就需要施工单位在实践中不断的总结和提高成本控制和索赔的方式和方法，以保证项目成本目标的实现。
This will require the construction units in the practice of constantly review and improve cost control and claims the ways and means to ensure that the project cost goals.
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