This paper presents the design methods and construction keys of umbrella folded space truss.
本文重点论述了伞状折网架的设计计算方法，以及有关设计构造要点。
The keys of metadata management lie in the construction a comprehensive and extended metadata model which describes all kinds of metadata.
元数据管理关键在于构建一个全面的、可扩展的元数据模型，表示各种类型的元数据。
As the important parts of the quality acceptance system, partialized and itemized project management are the keys in Construction Quality Acceptance.
分部（子分部）、分项作为施工质量验收体系中的重要内容，对如何合理地进行工程质量验收起到了关键的作用。
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