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NF E90-601-1986 Mechanical vibration and shock Balancing machines Description and evaluation 《机械振动和冲击 平衡机 描述和评价》.pdf 36

NF E90-601-1986 Mechanical vibration and shock Balancing machines Description and evaluation 《机械振动和冲击 平衡机 描述和评价》.pdfNF E90-601-1986 Mechanical vibration and shock Balancing machines Description and evaluation 《机械振动和冲击 平衡机 描述和评价》.pdf

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NF E90-600-1985 Mechanical vibrations and shocks Balancing criteria of rotors in a rigid state 《机械振动和冲击 刚性状态中转子的平衡标准》.pdf 31

NF E90-600-1985 Mechanical vibrations and shocks Balancing criteria of rotors in a rigid state 《机械振动和冲击 刚性状态中转子的平衡标准》.pdfNF E90-600-1985 Mechanical vibrations and shocks Balancing criteria of rotors in a rigid state 《机械振动和冲击 刚性状态中转子的平衡标准》.pdf

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NF E90-510-1996 Mechanical vibration and shock Measurement and evaluation of shock and vibration effects on sensitive equipment in buildings 《机械振动和冲击 冲击和振动对建筑物中敏感设备影响的测量和评定》.pdf 12

NF E90-510-1996 Mechanical vibration and shock Measurement and evaluation of shock and vibration effects on sensitive equipment in buildings 《机械振动和冲击 冲击和振动对建筑物中敏感设备影响的测量和评定》.pdfNF E90-510-1996 Mechanical vibration and shock Measurement and evaluation of shock and vibration effects on sensitive equipment in buildings 《机械振动和冲击 冲击和振动对建筑物中敏感设备影响的测量和评定》.pdf

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NF E55-092-1970 Office machines Dimensions of a core for paper or plastic printing ribbons 《办公机械 纸色带或塑料色带中心线尺寸》.pdf 1

NF E55-092-1970 Office machines Dimensions of a core for paper or plastic printing ribbons 《办公机械 纸色带或塑料色带中心线尺寸》.pdfNF E55-092-1970 Office machines Dimensions of a core for paper or plastic printing ribbons 《办公机械 纸色带或塑料色带中心线尺寸》.pdf

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NF E55-070-1987 Office machines - Ergonomically arranged alphanumeric keyboards - Keyboard layout and characters allocation《办公室设备 符合人体工程学的字母数字键盘 键盘布局和字符分配》.pdf 13

NF E55-070-1987 Office machines - Ergonomically arranged alphanumeric keyboards - Keyboard layout and characters allocation《办公室设备 符合人体工程学的字母数字键盘 键盘布局和字符分配》.pdfNF E55-070-1987 Office machines - Ergonomically arranged alphanumeric keyboards - Keyboard layout and characters allocation《办公室设备 符合人体工程学的字母数字键盘 键盘布局和字符分配》.pdf

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NF E55-062-1969 Office machines Keyboards Arrangement of printing keys and function keys on typewriters 《办公用机器 键盘 打字机打印键和功能键的排列》.pdf 4

NF E55-062-1969 Office machines Keyboards Arrangement of printing keys and function keys on typewriters 《办公用机器 键盘 打字机打印键和功能键的排列》.pdfNF E55-062-1969 Office machines Keyboards Arrangement of printing keys and function keys on typewriters 《办公用机器 键盘 打字机打印键和功能键的排列》.pdf

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NF E55-060-1976 Office machines - Alphanumeric keyboards layout《办公机器 字线数字键盘布局》.pdf 4

NF E55-060-1976 Office machines - Alphanumeric keyboards layout《办公机器 字线数字键盘布局》.pdfNF E55-060-1976 Office machines - Alphanumeric keyboards layout《办公机器 字线数字键盘布局》.pdf

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NF E55-052-1969 Office machines Symbols Function key symbols for typewriters 《办公机械 符号 打字机功能键符号》.pdf 2

NF E55-052-1969 Office machines Symbols Function key symbols for typewriters 《办公机械 符号 打字机功能键符号》.pdfNF E55-052-1969 Office machines Symbols Function key symbols for typewriters 《办公机械 符号 打字机功能键符号》.pdf

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NF E25-417-1986 Prevailing torque type hexagon nuts (non-metallic insert) with conical spring tightening washer Product grade A 《带锥形盘簧密封垫圈的常用力矩形六角螺母（非金属镶嵌件） A级产品》.pdf 6

NF E25-417-1986 Prevailing torque type hexagon nuts (non-metallic insert) with conical spring tightening washer Product grade A 《带锥形盘簧密封垫圈的常用力矩形六角螺母（非金属镶嵌件） A级产品》.pdfNF E25-417-1986 Prevailing torque type hexagon nuts (non-metallic insert) with conical spring tightening washer Product grade A 《带锥形盘簧密封垫圈的常用力矩形六角螺母（非金属镶嵌件） A级产品》.pdf

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NF E25-416-1987 Fasteners Hexagon nuts with tightening plain washer Product grade A 《紧固件 带普通平密封垫圈的六角头螺母 A级产品》.pdf 7

NF E25-416-1987 Fasteners Hexagon nuts with tightening plain washer Product grade A 《紧固件 带普通平密封垫圈的六角头螺母 A级产品》.pdfNF E25-416-1987 Fasteners Hexagon nuts with tightening plain washer Product grade A 《紧固件 带普通平密封垫圈的六角头螺母 A级产品》.pdf

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