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NF A49-865-1999 Metallic materials Drop weight tear test 《金属材料 落重破坏试验(欧洲标准EN 10274)》.pdf 16

NF A49-865-1999 Metallic materials Drop weight tear test 《金属材料 落重破坏试验(欧洲标准EN 10274)》.pdfNF A49-865-1999 Metallic materials Drop weight tear test 《金属材料 落重破坏试验(欧洲标准EN 10274)》.pdf

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NF A49-719-1998 Internal and or external protective coatings for steel tubes Specification for hot dip galvanized coatings applied in automatic plants 《钢管内部和 或外部防护涂层 自动装置热浸镀锌涂层规范》.pdf 20

NF A49-719-1998 Internal and or external protective coatings for steel tubes Specification for hot dip galvanized coatings applied in automatic plants 《钢管内部和 或外部防护涂层 自动装置热浸镀锌涂层规范》.pdfNF A49-719-1998 Internal and or external protective coatings for steel tubes Specification for hot dip galvanized coatings applied in automatic plants 《钢管内部和 或外部防护涂层 自动装置热浸镀锌涂层规范》.pdf

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NF A06-719-1986 Copper and copper alloys Determination of sulfur content Combustion titrimetric method 《铜和铜合金 硫含量的测定 燃烧滴定法》.pdf 7

NF A06-719-1986 Copper and copper alloys Determination of sulfur content Combustion titrimetric method 《铜和铜合金 硫含量的测定 燃烧滴定法》.pdfNF A06-719-1986 Copper and copper alloys Determination of sulfur content Combustion titrimetric method 《铜和铜合金 硫含量的测定 燃烧滴定法》.pdf

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NF A06-713-1970 Chemical analysis of copper and its alloys Spectrophotometric determination of silicon 《铜和铜合金的化学分析 硅的分光光度计法测定》.pdf 3

NF A06-713-1970 Chemical analysis of copper and its alloys Spectrophotometric determination of silicon 《铜和铜合金的化学分析 硅的分光光度计法测定》.pdfNF A06-713-1970 Chemical analysis of copper and its alloys Spectrophotometric determination of silicon 《铜和铜合金的化学分析 硅的分光光度计法测定》.pdf

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NF A06-712-1986 Copper and copper alloys Determination of bismuth content Diethyldithiocarbamate spectrometric method 《铜和铜合金 铋含量的测定 二乙基氨荒酸盐光谱法》.pdf 5

NF A06-712-1986 Copper and copper alloys Determination of bismuth content Diethyldithiocarbamate spectrometric method 《铜和铜合金 铋含量的测定 二乙基氨荒酸盐光谱法》.pdfNF A06-712-1986 Copper and copper alloys Determination of bismuth content Diethyldithiocarbamate spectrometric method 《铜和铜合金 铋含量的测定 二乙基氨荒酸盐光谱法》.pdf

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NF A06-711-1987 Chemical analysis of copper and copper alloys Determination of iron content Molecular absorption spectrophotometric method 《铜和铜合金的化学分析 铁含量的测定 分子吸收分光光度计法》.pdf 5

NF A06-711-1987 Chemical analysis of copper and copper alloys Determination of iron content Molecular absorption spectrophotometric method 《铜和铜合金的化学分析 铁含量的测定 分子吸收分光光度计法》.pdfNF A06-711-1987 Chemical analysis of copper and copper alloys Determination of iron content Molecular absorption spectrophotometric method 《铜和铜合金的化学分析 铁含量的测定 分子吸收分光光度计法》.pdf

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NF A06-710-1987 Chemical analysis of copper and copper alloys Determination of nickel content Molecular absorption spectrophotometric method 《铜和铜合金的化学分析 镍含量的测定 分子吸收分光光度计法》.pdf 5

NF A06-710-1987 Chemical analysis of copper and copper alloys Determination of nickel content Molecular absorption spectrophotometric method 《铜和铜合金的化学分析 镍含量的测定 分子吸收分光光度计法》.pdfNF A06-710-1987 Chemical analysis of copper and copper alloys Determination of nickel content Molecular absorption spectrophotometric method 《铜和铜合金的化学分析 镍含量的测定 分子吸收分光光度计法》.pdf

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NEN-EN 60950-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 modified)《IEC 950-1991，修改信息技术设备的安全，包括商用电气设备》.pdf 186

NEN-EN 60950-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 modified)《IEC 950-1991，修改信息技术设备的安全，包括商用电气设备》.pdfNEN-EN 60950-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 modified)《IEC 950-1991，修改信息技术设备的安全，包括商用电气设备》.pdf

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NEN-EN 60950 A2-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 A2 1993 modified)《IEC 950-1991 A2-1993， 修改 信息技术设备的安全，包括电气商业设备》.pdf 91

NEN-EN 60950 A2-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 A2 1993 modified)《IEC 950-1991 A2-1993， 修改 信息技术设备的安全，包括电气商业设备》.pdfNEN-EN 60950 A2-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 A2 1993 modified)《IEC 950-1991 A2-1993， 修改 信息技术设备的安全，包括电气商业设备》.pdf

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NEN-EN 60950 A1-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 A1 1992)《IEC 950-1991 A1-1992 信息技术设备的安全，包括商用电气设备》.pdf 16

NEN-EN 60950 A1-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 A1 1992)《IEC 950-1991 A1-1992 信息技术设备的安全，包括商用电气设备》.pdfNEN-EN 60950 A1-1994 Safety of information technology equipment including electrical business equipment(IEC 950 1991 A1 1992)《IEC 950-1991 A1-1992 信息技术设备的安全，包括商用电气设备》.pdf

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