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NF S87-500-2007 Horology - Time transmission from masterclock to secondary clocks by coded signals on double-wound or wireless - Requirements 《计时仪 以双股线或无线的编码信号从主钟到子钟的播时 要求》.pdf
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3
NF S87-210-1996 Hall clocks Clocks-fitting dimensions for convex and flat round mineral glasses 《门厅钟 凸面和扁圆形矿物玻璃钟安装尺寸》.pdf
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4
NF S87-150-1996 Hall clocks Central fixing screw 《大挂钟 中心固定螺孔》.pdf
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7
NF S10-015-1991 Glass and glass ceramics Knoop hardness test D 《玻璃和玻璃陶瓷 努氏硬度试验D》.pdf
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11
NF S10-014-1996 Raw optical glass Resistance to attack by aqueous acidic solutions at 25 degrees celsius Test method and classification 《未加工的光学玻璃 光学玻璃坯件 25℃下含水酸溶液的侵蚀抗性 试验方法和分类》.pdf
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8
NF S10-008-4-1998 Optics and optical instruments Preparation of drawings for optical elements and systems Part 4 material imperfections Inhomogeneity and striae 《光学及光学仪器 光学元件和系统图纸.pdf
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9
NF S10-008-3-1996 Optics and optical instruments Preparation of drawings for optical elements and systems Part 3 material imperfections Bubbles and inclusions 《光学和光学仪器 光学元件和系统用图纸制.pdf
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9
NF S10-008-2-1996 Optics and optical instruments Preparation of drawings for optical elements and systems Part 2 material imperfections Stress birefringence 《光学和光学仪器 光学元件和系统用图纸制备 .pdf
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4
NF R12-775-1987 Road vehicles Wheels for commercial vehicles Attachment stud and nut 《运输汽车车轮 轴和固定螺母》.pdf
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19
NF R12-761-2009 Passenger vehicle wheels - Clip balance weight and rim flange nomenclature test procedures and performance requirements 《客车车轮 夹片配重和轮辋凸缘术语、试验程序和性能要求》.pdf
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