1139资源列表
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[国外标准] BS 1139-6-2005 Metal scaffolding. Specification for prefabricated tower scaffolds outside the scope
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[国外标准] BS 1139-3-1994 Metal scaffolding - Specification for prefabricated mobile access and working towers
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[国外标准] BS 1139-2.2-2009 Metal scaffolding – Part 2 Couplers – Section 2.2 Aluminium couplers and special co
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[国外标准] BS 1139-2.2-1991 Metal scaffolding. Couplers. Specification for steel and aluminium couplers, fittin