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IEC 60444-11-2010 Measurement of Quartz crystal unit parameters - Part 11 Standard method for the determination of the load resonance frequency fL and the effective load capacitanc.pdf 32

IEC 60444-11-2010 Measurement of Quartz crystal unit parameters - Part 11 Standard method for the determination of the load resonance frequency fL and the effective load capacitanc.pdfIEC 60444-11-2010 Measurement of Quartz crystal unit parameters - Part 11 Standard method for the determination of the load resonance frequency fL and the effective load capacitanc.pdf

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IEC 60444-1-1986 Measurement of quartz crystal unit parameters by zero phase technique in a π-network part 1 basic method for the measurement of resonance frequency and resonance r.pdf 46

IEC 60444-1-1986 Measurement of quartz crystal unit parameters by zero phase technique in a π-network part 1 basic method for the measurement of resonance frequency and resonance r.pdfIEC 60444-1-1986 Measurement of quartz crystal unit parameters by zero phase technique in a π-network part 1 basic method for the measurement of resonance frequency and resonance r.pdf

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IEC 60444-1 AMD 1-1999 Measurement of quartz crystal unit parameters by zero phase technique in a π-network - Part 1 Basic method for the measurement of resonance frequency and res.pdf 16

IEC 60444-1 AMD 1-1999 Measurement of quartz crystal unit parameters by zero phase technique in a π-network - Part 1 Basic method for the measurement of resonance frequency and res.pdfIEC 60444-1 AMD 1-1999 Measurement of quartz crystal unit parameters by zero phase technique in a π-network - Part 1 Basic method for the measurement of resonance frequency and res.pdf

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IEC 60243-2-2013 Electric strength of insulating materials - Test methods - Part 2 Additional requirements for tests using direct voltage《绝缘材料的耐电强度 试验方法 第2部分 采用直流电压进行试验的补充要求》.pdf 22

IEC 60243-2-2013 Electric strength of insulating materials - Test methods - Part 2 Additional requirements for tests using direct voltage《绝缘材料的耐电强度 试验方法 第2部分 采用直流电压进行试验的补充要求》.pdfIEC 60243-2-2013 Electric strength of insulating materials - Test methods - Part 2 Additional requirements for tests using direct voltage《绝缘材料的耐电强度 试验方法 第2部分 采用直流电压进行试验的补充要求》.pdf

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IEC 60243-1-2013 Electric strength of insulating materials - Test methods - Part 1 Tests at power frequencies《绝缘材料电气强度.试验方法.第1部分 工业频率试验》.pdf 58

IEC 60243-1-2013 Electric strength of insulating materials - Test methods - Part 1 Tests at power frequencies《绝缘材料电气强度.试验方法.第1部分 工业频率试验》.pdfIEC 60243-1-2013 Electric strength of insulating materials - Test methods - Part 1 Tests at power frequencies《绝缘材料电气强度.试验方法.第1部分 工业频率试验》.pdf

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IEC 60240-1-1992 Characteristics of electric infra-red emitters for industrial heating part 1 short wave infra-red emitters《工业加热用电红外发射器的特性 第1部分 短波红外辐射器》.pdf 20

IEC 60240-1-1992 Characteristics of electric infra-red emitters for industrial heating part 1 short wave infra-red emitters《工业加热用电红外发射器的特性 第1部分 短波红外辐射器》.pdfIEC 60240-1-1992 Characteristics of electric infra-red emitters for industrial heating part 1 short wave infra-red emitters《工业加热用电红外发射器的特性 第1部分 短波红外辐射器》.pdf

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IEC 60238-2016 Edison screw lampholders《爱迪森螺纹灯座》.pdf 244

IEC 60238-2016 Edison screw lampholders《爱迪森螺纹灯座》.pdfIEC 60238-2016 Edison screw lampholders《爱迪森螺纹灯座》.pdf

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IEC 60236-1974 Methods for the designation of electrostatic deflecting electrodes of cathode-ray tubes《阴极射线管静电偏转电极的命名方法》.pdf 12

IEC 60236-1974 Methods for the designation of electrostatic deflecting electrodes of cathode-ray tubes《阴极射线管静电偏转电极的命名方法》.pdfIEC 60236-1974 Methods for the designation of electrostatic deflecting electrodes of cathode-ray tubes《阴极射线管静电偏转电极的命名方法》.pdf

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IEC 60072-3-1994 Dimensions and output series for rotating electrical machines part 3 small built-in motors flange numbers BF10 to BF50《旋转电机的尺寸及功率等级 第3部分 内装式小功率电机、凸缘号 BF10～BF50》.pdf 12

IEC 60072-3-1994 Dimensions and output series for rotating electrical machines part 3 small built-in motors flange numbers BF10 to BF50《旋转电机的尺寸及功率等级 第3部分 内装式小功率电机、凸缘号 BF10～BF50》.pdfIEC 60072-3-1994 Dimensions and output series for rotating electrical machines part 3 small built-in motors flange numbers BF10 to BF50《旋转电机的尺寸及功率等级 第3部分 内装式小功率电机、凸缘号 BF10～BF50》.pdf

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IEC 60072-2-1990 Dimensions and output series for rotating electrical machines part 2 frame numbers 355 to 1000 and flange numbers 1180 to 2360《旋转电机的尺寸及功率等级 第2部分 机座号 355～1000、凸缘号 1180～2360》.pdf 34

IEC 60072-2-1990 Dimensions and output series for rotating electrical machines part 2 frame numbers 355 to 1000 and flange numbers 1180 to 2360《旋转电机的尺寸及功率等级 第2部分 机座号 355～1000、凸缘号 1180～2360》.pdfIEC 60072-2-1990 Dimensions and output series for rotating electrical machines part 2 frame numbers 355 to 1000 and flange numbers 1180 to 2360《旋转电机的尺寸及功率等级 第2部分 机座号 355～1000、凸缘号 1180～2360》.pdf

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