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NEN 5184-1990 Quarry stone and similar stony materials Determination of resistance to alternating frost and thaw《原石和类似石材 交替冻融耐受性的测定》.pdf 2

NEN 5184-1990 Quarry stone and similar stony materials Determination of resistance to alternating frost and thaw《原石和类似石材 交替冻融耐受性的测定》.pdfNEN 5184-1990 Quarry stone and similar stony materials Determination of resistance to alternating frost and thaw《原石和类似石材 交替冻融耐受性的测定》.pdf

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NEN 5183-1990 Quarry stone and similar stony materials Determination of thickness and length ratio《原石和类似石材 厚度长度比的测定》.pdf 2

NEN 5183-1990 Quarry stone and similar stony materials Determination of thickness and length ratio《原石和类似石材 厚度长度比的测定》.pdfNEN 5183-1990 Quarry stone and similar stony materials Determination of thickness and length ratio《原石和类似石材 厚度长度比的测定》.pdf

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NEN 5182-1990 Quarry stone and similar stony materials Determination of mass distribution《原石和类似石材 质量分布的测定》.pdf 4

NEN 5182-1990 Quarry stone and similar stony materials Determination of mass distribution《原石和类似石材 质量分布的测定》.pdfNEN 5182-1990 Quarry stone and similar stony materials Determination of mass distribution《原石和类似石材 质量分布的测定》.pdf

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NEN 3232-1989 Steel wire ropes- Rope lays with 7 fibre cores for mooring and towing《钢丝绳 下锚和牵引用7纤维芯绞绳》.pdf 4

NEN 3232-1989 Steel wire ropes- Rope lays with 7 fibre cores for mooring and towing《钢丝绳 下锚和牵引用7纤维芯绞绳》.pdfNEN 3232-1989 Steel wire ropes- Rope lays with 7 fibre cores for mooring and towing《钢丝绳 下锚和牵引用7纤维芯绞绳》.pdf

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NEN 3231-1989 Steel wire ropes - Equal lay for general purpose《钢丝绳 通用等绞距绞合》.pdf 8

NEN 3231-1989 Steel wire ropes - Equal lay for general purpose《钢丝绳 通用等绞距绞合》.pdfNEN 3231-1989 Steel wire ropes - Equal lay for general purpose《钢丝绳 通用等绞距绞合》.pdf

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NEN 3230-1966 Foundry terms and definitions《铸造术语和定义》.pdf 67

NEN 3230-1966 Foundry terms and definitions《铸造术语和定义》.pdfNEN 3230-1966 Foundry terms and definitions《铸造术语和定义》.pdf

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NEN 3225-1962 《荷兰点和图例》.pdf 85

NEN 3225-1962 《荷兰点和图例》.pdfNEN 3225-1962 《荷兰点和图例》.pdf

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NEN 3222-1983 ISO Metric screw thread - Coarse pitch - Tolerances《ISO 公制螺纹 大螺距 公差》.pdf 6

NEN 3222-1983 ISO Metric screw thread - Coarse pitch - Tolerances《ISO 公制螺纹 大螺距 公差》.pdfNEN 3222-1983 ISO Metric screw thread - Coarse pitch - Tolerances《ISO 公制螺纹 大螺距 公差》.pdf

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NEN 2484-1989 Portable access material Ladders and steps Terms definitions requirements test methods use and maintenance《便携式接近材料 楼梯额梯级术语；定义；要求；试验方法；使用和维护》.pdf 42

NEN 2484-1989 Portable access material Ladders and steps Terms definitions requirements test methods use and maintenance《便携式接近材料 楼梯额梯级术语；定义；要求；试验方法；使用和维护》.pdfNEN 2484-1989 Portable access material Ladders and steps Terms definitions requirements test methods use and maintenance《便携式接近材料 楼梯额梯级术语；定义；要求；试验方法；使用和维护》.pdf

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NEN 2481-1989 Combustion products of solid mineral fuels -Determination of the sulfur content in powder coal ash after combustion in a furnace -Titrimetric method《固体矿物燃料的燃烧产物 在熔炉中燃.pdf 8

NEN 2481-1989 Combustion products of solid mineral fuels -Determination of the sulfur content in powder coal ash after combustion in a furnace -Titrimetric method《固体矿物燃料的燃烧产物 在熔炉中燃.pdfNEN 2481-1989 Combustion products of solid mineral fuels -Determination of the sulfur content in powder coal ash after combustion in a furnace -Titrimetric method《固体矿物燃料的燃烧产物 在熔炉中燃.pdf

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