1970资源列表
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[国外标准] BS 476-4-1970 Fire tests on building materials and structures. Non-combustibility test for materials
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[国外标准] BS 4346-2-1970 Joints and fittings for use with unplasticized PVC pressure pipes part 2 Mechanical j
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[国外标准] BS 3988-1970 Specification for Wrought aluminium for electrical purposes — Solid conductors for insu
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[国外标准] BS 215-2-1970 Specification for Aluminium conductors and aluminium conductors, steel-reinforced — Fo