针对各阶层的产能规划问题，提出两段式产能规划数学模型。
For the capacity planning problem at each level, a two-stage mathematical programming model is presented.
建立了以寿命周期费用最小为目标的供热系统优化规划数学模型。
Proposes an optimum mathematical model of heating systems with a minimum life cycle cost being the programming object.
以连续网络设计问题为主要研究对象，分析了连续网络设计问题双层规划数学模型的结构特点。
With continuous network design problems as the main study subject, it analyzes the structural characteristics of mathematical model of the bilevel programming for continuous network design problems.
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