矿井通风网络图是矿井通风管理的重要图件之一，也是进行矿井通风系统模拟、网络解算、通风系统优化的基础资料。
The ventilation network graph is one of the important drawings in the ventilation management of the coal mines.
文章选取工程项目中常用的网络图工期成本压缩优化法，来说明如何运用技术方法对工期成本进行优化。
This articles selects the optimization method of cost compression that commonly used in the project to illustrate how to use technical methods to optimize the cost of the construction period.
在网络优化方面，先将模糊网络图转化为均值网络图，对均值网络进行优化后再还原为模糊网络图。
In the process of optimization of network, we first change the fuzzy network into average network, then optimize the average network and change it back to the fuzzy network.
建立了求解铁路局范围内请求车审批优化的数学模型和与此模型对应的网络图，将铁路请求车审批优化问题转换为求解最小费用最大流问题。
This paper discusses the smallest cost problem on the undirection network, which has the upper limit of rate of flow, and sets up its mathematics model, and gives its relevant algorithm.
建立了求解铁路局范围内请求车审批优化的数学模型和与此模型对应的网络图，将铁路请求车审批优化问题转换为求解最小费用最大流问题。
We study uncapacitated version of the minimum cost flow problem of one-commodity and two-commodity with not only fixed cost but also variable cost, and give them each a polynomial algorithm.
建立了求解铁路局范围内请求车审批优化的数学模型和与此模型对应的网络图，将铁路请求车审批优化问题转换为求解最小费用最大流问题。
We study uncapacitated version of the minimum cost flow problem of one-commodity and two-commodity with not only fixed cost but also variable cost, and give them each a polynomial algorithm.
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