...种情况正好相反，例如记录模型（Record Modeling）、设计建模（Design Authoring）和施工系统设计（Construction System Design），其使用频率比使用效益排名靠前。
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因此分析管道周围土壤干燥圈或融化圈变化对管道系统的设计、施工和管理是十分必要的。
Therefore, it is necessary to analyze the variation of the dry or thaw circle around the pipeline for pipeline design, construction and management.
第二部分扼要讨论系统工程在水利工程的规划、设计、施工和运行管理中的应用。
The second part discusses simply the application of system engineering in planning, designing, building and management of operating in hydraulic engineering.
可以说，要使一套家用中央空调系统能够正常运行，设计、安装、施工的重要性不亚于主机设备。
Can say, want to make a set of household central air conditioning system can run normally, design, installation, construction importance as host equipment.
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