城市基础设施系统效益可持续性评价-建筑经济 关键词] 城市基础设施系统；效益可持续性；数据包络分析法（DEA） [gap=326]Key words: urban infrastructure system； benefit sustainability； DEA
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One problem was solved but now 30 years later a concrete channel without a trace of nature is not anymore an acceptable element of the urban infrastructure system.
它在当时确实缓解了问题，但在30余年之后，一条毫无自然形态的混凝土渠道已经不能满足新加坡城市基础设施的功能和景观需求。
In this project we examine two essential questions: How can an infrastructure element that is a protected monument be programmed and made part of the urban system?
在这个项目中，我们主要研究两个关键问题：如何将一个被重点保护的基础设施元素纳入城市系统？
The Chongqing urban fundamental geographic information system includes following parts: the GIS platform, data infrastructure, service infrastructure, security system, and standard system.
重庆城市基础地理信息系统建设的内容主要包括：数据体系、运行平台、服务体系、安全体系和标准体系。
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