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NF T30-801-1979 Exterior building paints Conventional determination of the water permeability of microporous cladding paints 《建筑物外部涂料 饰面用微孔涂料水渗透性的常规测定》.pdf 4

NF T30-801-1979 Exterior building paints Conventional determination of the water permeability of microporous cladding paints 《建筑物外部涂料 饰面用微孔涂料水渗透性的常规测定》.pdfNF T30-801-1979 Exterior building paints Conventional determination of the water permeability of microporous cladding paints 《建筑物外部涂料 饰面用微孔涂料水渗透性的常规测定》.pdf

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NF S90-521-1973 Medical and surgical equipment Components for artificial limbs and joints Assembly hook 《外科医疗设备 假肢和假关节组件 挂钩》.pdf 2

NF S90-521-1973 Medical and surgical equipment Components for artificial limbs and joints Assembly hook 《外科医疗设备 假肢和假关节组件 挂钩》.pdfNF S90-521-1973 Medical and surgical equipment Components for artificial limbs and joints Assembly hook 《外科医疗设备 假肢和假关节组件 挂钩》.pdf

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NF S90-520-1973 Medical and surgical equipment Components for artificial limbs and joints Detachable ankle joint with assembly hook 《外科医疗设备 假肢和假关节组件 连接挂钩的可拆卸踝骨》.pdf 3

NF S90-520-1973 Medical and surgical equipment Components for artificial limbs and joints Detachable ankle joint with assembly hook 《外科医疗设备 假肢和假关节组件 连接挂钩的可拆卸踝骨》.pdfNF S90-520-1973 Medical and surgical equipment Components for artificial limbs and joints Detachable ankle joint with assembly hook 《外科医疗设备 假肢和假关节组件 连接挂钩的可拆卸踝骨》.pdf

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NF S90-514-1973 Medical and surgical equipment Components for artificial limbs and joints Shouldered rivet with raised cheese head 《外科医疗设备 假肢和假关节组件 凸耳凸圆头有肩铆钉》.pdf 1

NF S90-514-1973 Medical and surgical equipment Components for artificial limbs and joints Shouldered rivet with raised cheese head 《外科医疗设备 假肢和假关节组件 凸耳凸圆头有肩铆钉》.pdfNF S90-514-1973 Medical and surgical equipment Components for artificial limbs and joints Shouldered rivet with raised cheese head 《外科医疗设备 假肢和假关节组件 凸耳凸圆头有肩铆钉》.pdf

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NF S90-513-1973 Medical and surgical equipment Components for artificial limbs and joints Joint screw with raised slotted cheesehead and flange partly threaded 《医疗和外科器械 假肢和人造关节元件 带.pdf 1

NF S90-513-1973 Medical and surgical equipment Components for artificial limbs and joints Joint screw with raised slotted cheesehead and flange partly threaded 《医疗和外科器械 假肢和人造关节元件 带.pdfNF S90-513-1973 Medical and surgical equipment Components for artificial limbs and joints Joint screw with raised slotted cheesehead and flange partly threaded 《医疗和外科器械 假肢和人造关节元件 带.pdf

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NF S90-512-1973 Medical and surgical equipment Components for artificial limbs and joints Joint screw with flat slotted cheesehead fully threaded 《外科医疗设备 假肢和假关节组件 带平耳凸圆头开槽连接螺钉 全螺纹》.pdf 2

NF S90-512-1973 Medical and surgical equipment Components for artificial limbs and joints Joint screw with flat slotted cheesehead fully threaded 《外科医疗设备 假肢和假关节组件 带平耳凸圆头开槽连接螺钉 全螺纹》.pdfNF S90-512-1973 Medical and surgical equipment Components for artificial limbs and joints Joint screw with flat slotted cheesehead fully threaded 《外科医疗设备 假肢和假关节组件 带平耳凸圆头开槽连接螺钉 全螺纹》.pdf

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NF S30-100-1999 Acoustics Determination of sound power levels of noise from air-terminal devices air-terminal units dampers and valves by measurement in reverberation room 《声学 混响室空.pdf 20

NF S30-100-1999 Acoustics Determination of sound power levels of noise from air-terminal devices air-terminal units dampers and valves by measurement in reverberation room 《声学 混响室空.pdfNF S30-100-1999 Acoustics Determination of sound power levels of noise from air-terminal devices air-terminal units dampers and valves by measurement in reverberation room 《声学 混响室空.pdf

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NF S30-010-1974 Acoustics Nr curve for the assessment of noise 《声学 噪音评价曲线》.pdf 5

NF S30-010-1974 Acoustics Nr curve for the assessment of noise 《声学 噪音评价曲线》.pdfNF S30-010-1974 Acoustics Nr curve for the assessment of noise 《声学 噪音评价曲线》.pdf

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NF S30-009-1980 Acoustics Attenuation of sound in air 《声学 空气中声音的衰减》.pdf 8

NF S30-009-1980 Acoustics Attenuation of sound in air 《声学 空气中声音的衰减》.pdfNF S30-009-1980 Acoustics Attenuation of sound in air 《声学 空气中声音的衰减》.pdf

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NF S30-007-4-1999 Acoustics Reference zero for the calibration of audiometric equipment Part 4 reference levels for narrow-band masking noise 《声学 听力测定仪器的校准用基准 0 第4部分 窄频带遮蔽噪声的基准级》.pdf 11

NF S30-007-4-1999 Acoustics Reference zero for the calibration of audiometric equipment Part 4 reference levels for narrow-band masking noise 《声学 听力测定仪器的校准用基准 0 第4部分 窄频带遮蔽噪声的基准级》.pdfNF S30-007-4-1999 Acoustics Reference zero for the calibration of audiometric equipment Part 4 reference levels for narrow-band masking noise 《声学 听力测定仪器的校准用基准 0 第4部分 窄频带遮蔽噪声的基准级》.pdf

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