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IEC 60318-3-2014 Electroacoustics - Simulators of human head and ear - Part 3 Acoustic coupler for the calibration of supra-aural earphones used in audiometry《电声学 人的头和耳模拟器 第3部分 用于听力测定计的超听力耳机校正用声耦合.pdf 28

IEC 60318-3-2014 Electroacoustics - Simulators of human head and ear - Part 3 Acoustic coupler for the calibration of supra-aural earphones used in audiometry《电声学 人的头和耳模拟器 第3部分 用于听力测定计的超听力耳机校正用声耦合.pdfIEC 60318-3-2014 Electroacoustics - Simulators of human head and ear - Part 3 Acoustic coupler for the calibration of supra-aural earphones used in audiometry《电声学 人的头和耳模拟器 第3部分 用于听力测定计的超听力耳机校正用声耦合.pdf

上传人：赵齐羽
5人阅读
IEC 60318-1-2009 Electroacoustics - Simulators of human head and ear - Part 1 Ear simulator for the measurement of supra-aural and circumaural earphones《电声学.人的头部和耳朵模拟.第1部分 测量超听觉和耳罩耳机的耳朵模拟器》.pdf 54

IEC 60318-1-2009 Electroacoustics - Simulators of human head and ear - Part 1 Ear simulator for the measurement of supra-aural and circumaural earphones《电声学.人的头部和耳朵模拟.第1部分 测量超听觉和耳罩耳机的耳朵模拟器》.pdfIEC 60318-1-2009 Electroacoustics - Simulators of human head and ear - Part 1 Ear simulator for the measurement of supra-aural and circumaural earphones《电声学.人的头部和耳朵模拟.第1部分 测量超听觉和耳罩耳机的耳朵模拟器》.pdf

上传人：赵齐羽
7人阅读
IEC 60317-70-2017 Specifications for particular types of winding wires - Part 70 Polyester glass-fibre wound fused unvarnished or resin or varnish impregnated bare or enamelled rou.pdf 24

IEC 60317-70-2017 Specifications for particular types of winding wires - Part 70 Polyester glass-fibre wound fused unvarnished or resin or varnish impregnated bare or enamelled rou.pdfIEC 60317-70-2017 Specifications for particular types of winding wires - Part 70 Polyester glass-fibre wound fused unvarnished or resin or varnish impregnated bare or enamelled rou.pdf

上传人：赵齐羽
5人阅读
IEC 60317-68-2017 Specifications for particular types of winding wires - Part 68 Polyvinyl acetal enamelled rectangular aluminium wire class 120《特种绕组线规格 第68部分 120类聚乙烯醇缩醛漆包扁铝线》.pdf 14

IEC 60317-68-2017 Specifications for particular types of winding wires - Part 68 Polyvinyl acetal enamelled rectangular aluminium wire class 120《特种绕组线规格 第68部分 120类聚乙烯醇缩醛漆包扁铝线》.pdfIEC 60317-68-2017 Specifications for particular types of winding wires - Part 68 Polyvinyl acetal enamelled rectangular aluminium wire class 120《特种绕组线规格 第68部分 120类聚乙烯醇缩醛漆包扁铝线》.pdf

上传人：赵齐羽
3人阅读
IEC 60122-3-2010 Quartz crystal units of assessed quality - Part 3 Standard outlines and lead connections《石英振荡器的质量评定.第3部分 标准外框和铅连接件》.pdf 52

IEC 60122-3-2010 Quartz crystal units of assessed quality - Part 3 Standard outlines and lead connections《石英振荡器的质量评定.第3部分 标准外框和铅连接件》.pdfIEC 60122-3-2010 Quartz crystal units of assessed quality - Part 3 Standard outlines and lead connections《石英振荡器的质量评定.第3部分 标准外框和铅连接件》.pdf

上传人：赵齐羽
5人阅读
IEC 60122-2-1983 Quartz crystal units for frequency control and selection Part 2 Guide to the use of quartz crystal units for frequency control and selection《频率控制和选择用石英晶体元件 第2部分 频率控制和选择用石英晶体元件使用.pdf 92

IEC 60122-2-1983 Quartz crystal units for frequency control and selection Part 2 Guide to the use of quartz crystal units for frequency control and selection《频率控制和选择用石英晶体元件 第2部分 频率控制和选择用石英晶体元件使用.pdfIEC 60122-2-1983 Quartz crystal units for frequency control and selection Part 2 Guide to the use of quartz crystal units for frequency control and selection《频率控制和选择用石英晶体元件 第2部分 频率控制和选择用石英晶体元件使用.pdf

上传人：赵齐羽
5人阅读
IEC 60122-2-1-1991 Quartz crystal units for frequency control and selection part 2 guide to the use of quartz crystal units for frequency control and selection section 1 quartz cry.pdf 44

IEC 60122-2-1-1991 Quartz crystal units for frequency control and selection part 2 guide to the use of quartz crystal units for frequency control and selection section 1 quartz cry.pdfIEC 60122-2-1-1991 Quartz crystal units for frequency control and selection part 2 guide to the use of quartz crystal units for frequency control and selection section 1 quartz cry.pdf

上传人：赵齐羽
4人阅读
IEC 60121-1960 Recommendation for commercial annealed aluminium electrical conductor wires《工业用电工退火铝导线的建议》.pdf 10

IEC 60121-1960 Recommendation for commercial annealed aluminium electrical conductor wires《工业用电工退火铝导线的建议》.pdfIEC 60121-1960 Recommendation for commercial annealed aluminium electrical conductor wires《工业用电工退火铝导线的建议》.pdf

上传人：赵齐羽
3人阅读
IEC 60119-1960 Recommendation for polycrystalline semiconductor rectifier stacks and equipment《关于多晶半导体整流堆和设备的推荐标准》.pdf 100

IEC 60119-1960 Recommendation for polycrystalline semiconductor rectifier stacks and equipment《关于多晶半导体整流堆和设备的推荐标准》.pdfIEC 60119-1960 Recommendation for polycrystalline semiconductor rectifier stacks and equipment《关于多晶半导体整流堆和设备的推荐标准》.pdf

上传人：赵齐羽
3人阅读
IEC 60034-16-1-2011 Rotating electrical machines Part 16-1 Excitation systems for synchronous machines - Definitions《旋转电机.第16部分 同步电机励磁系统.定义》.pdf 26

IEC 60034-16-1-2011 Rotating electrical machines Part 16-1 Excitation systems for synchronous machines - Definitions《旋转电机.第16部分 同步电机励磁系统.定义》.pdfIEC 60034-16-1-2011 Rotating electrical machines Part 16-1 Excitation systems for synchronous machines - Definitions《旋转电机.第16部分 同步电机励磁系统.定义》.pdf

上传人：赵齐羽
6人阅读
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