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涵洞通用圖 Culvert General map...
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高速公路隔音屏結構圖 Highway noise barriers Chart...
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鋼筋砼預應力梁板橋施工圖 Prestressed Concrete Slab Construction Drawing...
Excel設計高程計算 Excel Design and Elevation Calculation...
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鋼結構拱橋施工圖 Steel arch bridge drawings...
道路施工全套圖 Full map road construction...
道路交通標志牌結構圖 Road traffic signs chart...