国外标准列表
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[国外标准] BS EN 1780-3-1997 Aluminium and aluminium alloys. designation of unalloyed and alloyed aluminium ing
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[国外标准] BS EN 1775-2007 Gas supply - gas pipework for buildings - maximum operating pressure less than or eq
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[国外标准] BS EN 1748-2-1-2004 Glass in building. Special basic products. Glass ceramics. Definitions and gener
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[国外标准] BS EN 1748-1-1-2004 Glass in building. Special basic products. Borosilicate glasses. Definition and