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一个项目的技术要求通常用图纸和技术文件表示,清晰地说明该项目的设计和施工方面的问题以及要求。然而,有些图纸和技术文件往往忽略了许多细部,或者表述得不明确,难以施工。这一点对于屋顶穿透物尤其如此。
The technical requirements for a project are usually expressed in drawings and technical documents, clearly describing the project design and construction issues and requirements. However, some drawings and technical documents tend to overlook many details, or the expression is not clear, it is difficult to construct. This is especially true for roof penetrations.