En资源列表
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[国外标准] BS EN 335-3-1996 Durability of wood and wood-based products Definition of hazard classes of biologic
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[国外标准] BS EN 335-2-2006 Durability of wood and wood-based products Definition of use classes — Part 2 Appli
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[国外标准] BS EN 335-1-2006 Durability of wood and wood-based products Definitions of use classes — Part 1 Gene
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[国外标准] BS EN 3323-2009 Aerospace series — Bolts with double hexagon head, relieved shank long thread, — In
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[国外标准] BS EN 3303-1997 Aerospace series — Bolts with double hexagon head, relieved shank long thread, — In
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[国外标准] BS EN 3293-2008 Aerospace series — Bolts, T-head, close tolerance, medium thread length, in heat res
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[国外标准] BS EN 328-1999 heat exchangers. test procedures for establishing the performance of forced convectio
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[国外标准] BS EN 3202-1995 holes and traps for t-head bolts. design standard this standard specifies the holes
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[国外标准] BS EN 3155-063-2009 Aerospace series — Electrical contacts used in elements of connection Part 063 C
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[国外标准] BS EN 303-4-1999 Heating boilers - Part 4 Heating boilers with forced draught burners - Special requ
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[国外标准] BS EN 303-3-1999 Heating boilers — Part 3 Gas-fired central heating boilers — Assembly comprising a
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[国外标准] BS EN 303-2-1999 Heating boilers -Part Heating boilers with forced draught burners — Special require
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[国外标准] BS EN 303-1-1999 Heating boilers - Part I Heating boilers with forced draught burners - Terminology,