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NF C28-931-1998 Magnetic materials Part 2 methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame 《磁性材料 第2部分 用爱普斯坦框架法对电工.pdf 23

NF C28-931-1998 Magnetic materials Part 2 methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame 《磁性材料 第2部分 用爱普斯坦框架法对电工.pdfNF C28-931-1998 Magnetic materials Part 2 methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame 《磁性材料 第2部分 用爱普斯坦框架法对电工.pdf

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NF C19-101-2005 Radiation protection instrumentation - Neutron ambient dose equivalent (rate) meters 《辐射防护仪 中子环境剂量当量率计》.pdf 44

NF C19-101-2005 Radiation protection instrumentation - Neutron ambient dose equivalent (rate) meters 《辐射防护仪 中子环境剂量当量率计》.pdfNF C19-101-2005 Radiation protection instrumentation - Neutron ambient dose equivalent (rate) meters 《辐射防护仪 中子环境剂量当量率计》.pdf

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NF C18-450-1994 Aerial devices with insulating boom used for live working exceeding 1 kv A C 《交流电压超过 1 kV 的带电作业用有绝缘杆的天线装置》.pdf 76

NF C18-450-1994 Aerial devices with insulating boom used for live working exceeding 1 kv A C 《交流电压超过 1 kV 的带电作业用有绝缘杆的天线装置》.pdfNF C18-450-1994 Aerial devices with insulating boom used for live working exceeding 1 kv A C 《交流电压超过 1 kV 的带电作业用有绝缘杆的天线装置》.pdf

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NF C18-446-2009 Live working - Portable equipment for earthing or earthing and short-circuiting 《带电作业 便携式接地或接地并短路设备》.pdf 67

NF C18-446-2009 Live working - Portable equipment for earthing or earthing and short-circuiting 《带电作业 便携式接地或接地并短路设备》.pdfNF C18-446-2009 Live working - Portable equipment for earthing or earthing and short-circuiting 《带电作业 便携式接地或接地并短路设备》.pdf

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NF C18-446-1996 Live working Portable equipment for earthing or earthing and short-circuiting 《带电作业 接地用便携式设备或接地和短路》.pdf 44

NF C18-446-1996 Live working Portable equipment for earthing or earthing and short-circuiting 《带电作业 接地用便携式设备或接地和短路》.pdfNF C18-446-1996 Live working Portable equipment for earthing or earthing and short-circuiting 《带电作业 接地用便携式设备或接地和短路》.pdf

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NF C18-445-1994 Live working Earthing or earthing and short-circuiting equipment using lances as a short-circuiting device Lance earthing 《带电作业 接地或用矛状物作为短路装置的接地和短路设备 矛式接地》.pdf 37

NF C18-445-1994 Live working Earthing or earthing and short-circuiting equipment using lances as a short-circuiting device Lance earthing 《带电作业 接地或用矛状物作为短路装置的接地和短路设备 矛式接地》.pdfNF C18-445-1994 Live working Earthing or earthing and short-circuiting equipment using lances as a short-circuiting device Lance earthing 《带电作业 接地或用矛状物作为短路装置的接地和短路设备 矛式接地》.pdf

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NF B50-003-1985 HOLZ VOKABULAR 《木材 词汇 (第二批名单)》.pdf 8

NF B50-003-1985 HOLZ VOKABULAR 《木材 词汇 (第二批名单)》.pdfNF B50-003-1985 HOLZ VOKABULAR 《木材 词汇 (第二批名单)》.pdf

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NF B50-002-1961 Wood Vocabulary 《木材 词汇》.pdf 37

NF B50-002-1961 Wood Vocabulary 《木材 词汇》.pdfNF B50-002-1961 Wood Vocabulary 《木材 词汇》.pdf

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NF B50-001-1971 WOOD NOMENCLATURE 《木材 术语》.pdf 43

NF B50-001-1971 WOOD NOMENCLATURE 《木材 术语》.pdfNF B50-001-1971 WOOD NOMENCLATURE 《木材 术语》.pdf

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NF B49-421-1990 Refractory products Chemical analysis of aluminous siliceous silicon carbide carbon and metallic silicon refractory products 《耐火材料制品 铝矾土、硅质材料、碳化硅、碳和金属硅耐火材料制品的化学分析》.pdf 19

NF B49-421-1990 Refractory products Chemical analysis of aluminous siliceous silicon carbide carbon and metallic silicon refractory products 《耐火材料制品 铝矾土、硅质材料、碳化硅、碳和金属硅耐火材料制品的化学分析》.pdfNF B49-421-1990 Refractory products Chemical analysis of aluminous siliceous silicon carbide carbon and metallic silicon refractory products 《耐火材料制品 铝矾土、硅质材料、碳化硅、碳和金属硅耐火材料制品的化学分析》.pdf

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