BS 7973-2-2001 钢筋的隔离件和垫板及其规范 第2部分:隔离件和
BS 7973-2-2001 Spacers and chairs for steel reinforcement and their specification — Part 2: Fixing and application of spacers and chairs and tying of reinforcement钢筋的隔离件和垫板及其规范 第2部分:隔离件和垫板的固定和应用以及钢筋的捆扎
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