otitis-externa 发表于 2025-3-21 18:33:11
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https://doi.org/10.1007/978-1-349-01287-9building; civil engineering; construction; roof抑制 发表于 2025-3-22 02:58:41
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Three-dimensional structuresntrated loads, special design provision is required, the load then being distributed along the length of the member. For long spans, the individual structural component will probably be very large, creating transportation problems.煤渣 发表于 2025-3-22 12:08:27
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Introductiony have cylindrical or conoid surfaces, with perforated deep beams or lattice girders as edge supports (Fig. 27e and f). Figures 1 and 2 illustrate the differences between skeletal and surface structures in roofs of similar cylindrical vaulted geometry.动物 发表于 2025-3-22 22:29:48
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