Empirical estimation of cost functions requires statistical techniques which relate the cost of constructing or operating a facility to a few important characteristics or attributes of the system.
利用基于经验的成本函数估算成本需要一些统计技术，这些技术将建造或运营某设施与系统的一些重要特征或属性联系起来。
Failure, configure, performance, security and logging cost functions of network management system have been discussed.
阐述了网络管理系统的故障、配置、性能、安全和记费管理五大功能。
Whereas the selection of residential structural system is the important theme which influents residential functions of use, cost and long-term.
而住宅结构体系的选择是影响住宅使用功能、造价和工期的重要课题。
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