引入工程项目全生命周期费用管理的概念，介绍了价值工程的基本原理。
In this paper, we introduce the conception of project life cycle cost management and basic theory of value engineer.
DBO模式被认为具有优化项目全生命周期费用，提高设施运营效率的作用。
The DBO project delivery approach is considered to optimize project life-cycle costs and improve the efficiency of operation of facilities.
运用热经济学优化方法对空调系统进行设计可以使空调系统生命周期费用具有良好的经济性。
The application of the thermo economic optimization design in an air-source heat pump system is important in achieving economical life cycle cost.
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