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NF S91-109-1999 Dental rotary instruments Burs Part 1 steel and carbide burs 《牙科用旋转器械 牙钻 第1部分 钢制牙钻和硬质合金牙钻》.pdf 40

NF S91-109-1999 Dental rotary instruments Burs Part 1 steel and carbide burs 《牙科用旋转器械 牙钻 第1部分 钢制牙钻和硬质合金牙钻》.pdfNF S91-109-1999 Dental rotary instruments Burs Part 1 steel and carbide burs 《牙科用旋转器械 牙钻 第1部分 钢制牙钻和硬质合金牙钻》.pdf

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NF S31-070-1993 Acoustics Materials for acoustical applications Determination of airflow resistance 《声学 声学应用材料 气流阻力的测定》.pdf 14

NF S31-070-1993 Acoustics Materials for acoustical applications Determination of airflow resistance 《声学 声学应用材料 气流阻力的测定》.pdfNF S31-070-1993 Acoustics Materials for acoustical applications Determination of airflow resistance 《声学 声学应用材料 气流阻力的测定》.pdf

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NF S31-066-2-2005 Acoustics - Determination of sound immissions from sound sources placed close to the ear - Part 2 technique using a manikin (manikin-technique) 《声学 从接近耳朵的声源处测定声辐.pdf 28

NF S31-066-2-2005 Acoustics - Determination of sound immissions from sound sources placed close to the ear - Part 2 technique using a manikin (manikin-technique) 《声学 从接近耳朵的声源处测定声辐.pdfNF S31-066-2-2005 Acoustics - Determination of sound immissions from sound sources placed close to the ear - Part 2 technique using a manikin (manikin-technique) 《声学 从接近耳朵的声源处测定声辐.pdf

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NF S31-065-1981 Acoustics Testing of architectural acoustics Determination of sound absorption coefficient and impedance in a tube 《声学 驻波管法测定标准入射角声阻抗和吸音率》.pdf 13

NF S31-065-1981 Acoustics Testing of architectural acoustics Determination of sound absorption coefficient and impedance in a tube 《声学 驻波管法测定标准入射角声阻抗和吸音率》.pdfNF S31-065-1981 Acoustics Testing of architectural acoustics Determination of sound absorption coefficient and impedance in a tube 《声学 驻波管法测定标准入射角声阻抗和吸音率》.pdf

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NF S31-064-1997 Acoustics Sound absorbers for use in buildings Rating of sound absorption 《声学 建筑物用吸音器 吸音额定值》.pdf 15

NF S31-064-1997 Acoustics Sound absorbers for use in buildings Rating of sound absorption 《声学 建筑物用吸音器 吸音额定值》.pdfNF S31-064-1997 Acoustics Sound absorbers for use in buildings Rating of sound absorption 《声学 建筑物用吸音器 吸音额定值》.pdf

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NF S31-062-2-1995 Acoustics - Hearing protectors - Part 2 estimation of effective A-weighted sound pressure levels when hearing protectors are worn 《声学 听力保护器 第2部分 听力保护器损坏时A加权声压级有效.pdf 19

NF S31-062-2-1995 Acoustics - Hearing protectors - Part 2 estimation of effective A-weighted sound pressure levels when hearing protectors are worn 《声学 听力保护器 第2部分 听力保护器损坏时A加权声压级有效.pdfNF S31-062-2-1995 Acoustics - Hearing protectors - Part 2 estimation of effective A-weighted sound pressure levels when hearing protectors are worn 《声学 听力保护器 第2部分 听力保护器损坏时A加权声压级有效.pdf

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NF R14-505-1992 Passenger cars Windscreen wiper systems Wiper arm-to-blade connections 《乘用车 风档刮水器 刮水器刮杆与刮片的连接》.pdf 8

NF R14-505-1992 Passenger cars Windscreen wiper systems Wiper arm-to-blade connections 《乘用车 风档刮水器 刮水器刮杆与刮片的连接》.pdfNF R14-505-1992 Passenger cars Windscreen wiper systems Wiper arm-to-blade connections 《乘用车 风档刮水器 刮水器刮杆与刮片的连接》.pdf

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NF R14-504-1992 Passenger cars Windscreen wiper systems Wiper blade length 《乘用车 风档刮水器 刮水器刮片的长度》.pdf 3

NF R14-504-1992 Passenger cars Windscreen wiper systems Wiper blade length 《乘用车 风档刮水器 刮水器刮片的长度》.pdfNF R14-504-1992 Passenger cars Windscreen wiper systems Wiper blade length 《乘用车 风档刮水器 刮水器刮片的长度》.pdf

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NF R14-503-1989 Road vehicles Rear-window washing and wiping systems for passenger cars Test methods 《道路车辆 乘用车后窗清洗和擦拭系统 试验方法》.pdf 12

NF R14-503-1989 Road vehicles Rear-window washing and wiping systems for passenger cars Test methods 《道路车辆 乘用车后窗清洗和擦拭系统 试验方法》.pdfNF R14-503-1989 Road vehicles Rear-window washing and wiping systems for passenger cars Test methods 《道路车辆 乘用车后窗清洗和擦拭系统 试验方法》.pdf

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NF R14-502-1988 Road vehicles Rear-window defrosting system for passenger cars Test method 《道路车辆 乘用车后窗除冰装置 试验方法》.pdf 6

NF R14-502-1988 Road vehicles Rear-window defrosting system for passenger cars Test method 《道路车辆 乘用车后窗除冰装置 试验方法》.pdfNF R14-502-1988 Road vehicles Rear-window defrosting system for passenger cars Test method 《道路车辆 乘用车后窗除冰装置 试验方法》.pdf

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