Cart:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 22764.3-2008 |
Cabinets for low-voltage switchgear - Part 3: Environment and climate 低压机柜 第3部分：环境与气候 |
China National Standards switch |
 English PDF |
| GB/T 22764.2-2008 |
Cabinets for low-voltage switchgear - Part 2: Series of dimensions 低压机柜 第2部分：尺寸系列 |
China National Standards switch |
English PDF |
| GB/T 22764.1-2008 |
Cabinets for low-voltage switchgear - Part 1: Generic specification 低压机柜 第1部分：总规范 |
China National Standards switch |
English PDF |
| GB/T 14048.18-2008 |
Low-voltage switchgear and controlgear - Part 7-3: Ancillary equipment - Safety requirements for fuse terminal blocks 低压开关设备和控制设备 第7-3部分：辅助器件 熔断器接线端子排的安全要求 |
China National Standards switch |
English PDF |
| GB/T 14048.17-2008 |
Low-voltage switchgear and controlgear - Part 5-4: Control circuit devices and switching elements - Methord of assessing the performance of low-energy contacts - Special tests 低压开关设备和控制设备 第5-4部分：控制电路电器和开关元件 小容量触头的性能评定方法 特殊试验 |
China National Standards switch |
English PDF |
| GB/T 22580-2008 |
Specific environmental condition - Technical requirements of electric equipments used for plateau - Low-voltage switchgear and controlgear assemblies 特殊环境条件 高原电气设备技术要求 低压成套开关设备和控制设备 |
China National Standards switch |
English PDF |
| GB/T 15838-2008 |
Test methods for the performances of switching equipment clocks in digital network 数字网中交换设备时钟性能测试方法 |
China National Standards switch |
English PDF |
| GB/T 14048.11-2008 |
Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment 低压开关设备和控制设备 第6-1部分：多功能电器 转换开关电器 |
China National Standards switch |
English PDF |
| GB/T 14048.10-2008 |
Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching element - Proximtiy switches 低压开关设备和控制设备 第5-2部分：控制电路电器和开关元件 接近开关 |
China National Standards switch |
English PDF |
| GB/T 22382-2008 |
Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltage of 72.5 kV and above 额定电压 72.5kV 及以上气体绝缘金属封闭开关设备与电力变压器之间的直接连接 |
China National Standards switch |
English PDF |
| GB/T 22381-2008 |
Cable connections for gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above - Fluid-filled and extruded insulation power cables - Fluid-filled and dry type cable-terminations 额定电压 72.5kV 及以上气体绝缘金属封闭开关设备与充流体及挤包绝缘电力电缆的连接 充流体及干式电缆终端 |
China National Standards switch |
English PDF |
| GB 7674-2008 |
Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above 额定电压72.5kV及以上气体绝缘金属封闭开关设备 |
China National Standards switch |
English PDF |
| GB 14048.9-2008 |
Low-voltage switchgear and controlgear - Section 6-2: Multiple function equipment control and protective switching devices (or equipment) (CPS) 低压开关设备和控制设备 第6-2部分：多功能电器（设备）控制与保护开关电器（设备）(CPS) |
China National Standards switch |
English PDF |
| GB 14048.2-2008 |
Low-voltage switchgear and controlgear - Part 2: Circuit-breakers 低压开关设备和控制设备 第2部分：断路器 |
China National Standards switch |
English PDF |
| GB/T 17215.421-2008 |
Electricity metering equipment (a.c) - Tariff and load control - Part 21: Particular requirements for time switches 交流测量-费率和负荷控制 第21部分：时间开关的特殊要求 |
China National Standards switch |
English PDF |
| GB/T 14714-2008 |
General specification of switching power supply for mini-micro computer system 微小型计算机系统设备用开关电源通用规范 |
China National Standards switch |
English PDF |
| GB/T 22195-2008 |
Electrical installations in ships - Low-voltage switchgear and controlgear assemblies 船舶电气设备 设备 低压开关设备和控制设备组合装置 |
China National Standards switch |
English PDF |
| GB 7251.5-2008 |
Low-voltage switchgear and controlgear assemblies - Part 5:Particular requirements for assemblies for power distribution in public networks 低压成套开关设备和控制设备 第5部分: 对公用电网动力配电成套设备的特殊要求 |
China National Standards switch |
English PDF |
| GB 14048.5-2008 |
Low-voltage switchgear and controlgear - Part 5-1:Control circuit devices and switching element - Electromechanical control circuit devices 低压开关设备和控制设备 第5-1部分：控制电路电器和开关元件 机电式控制电路电器 |
China National Standards switch |
English PDF |
| GB 14048.3-2008 |
Low-voltage switchgear and controlgear - Part 3:Switches, disconnectors, switch-disconnectors and fuse-combination units 低压开关设备和控制设备 第3部分: 开关、隔离器、隔离开关以及熔断器组合电器 |
China National Standards switch |
English PDF |
| GB/T 4728.9-2008 |
Graphical symbols for diagrams - Part 9：Telecommunications - switching and peripheral equipment 电气简图用图形符号 第9部分：电信 交换和外围设备 |
China National Standards switch |
English PDF |
| GB/T 4728.7-2008 |
Graphical symbols for diagrams - Part 7：switchgear,controlgear and protective devices 电气简图用图形符号 第7部分：开关、控制和保护器件 |
China National Standards switch |
English PDF |
| GB/T 21645.1-2008 |
Technical requirements for Automatically switched Optical Network - Part 1: Architecture and general requirements 自动交换光网络(ASON)技术要求 第1部分: 体系结构与总体要求 |
China National Standards switch |
English PDF |
| GB 14048.6-2008 |
Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters AC semiconductor motor controllers and starters(including soft-starter) 低压开关设备和控制设备 第4-2部分：接触器和电动机起动器 交流半导体电动机控制器和起动器（含软起动器） |
China National Standards switch |
English PDF |
| GB/Z 21212-2007 |
Polyester film for membrane switches 薄膜开关用聚酯薄膜 |
China National Standards switch |
English PDF |
| GB/T 21208-2007 |
Low-voltage switchgear and controlgear - Controllers for drivers of stationary fire pumps 低压开关设备和控制设备 固定式消防泵驱动器的控制器 |
China National Standards switch |
English PDF |
| GB/T 21050-2007 |
Information security techniques - Security requirements for network switch (EAL3) 信息安全技术 网络交换机安全技术要求（评估保证级3） |
China National Standards switch |
English PDF |
| GB/Z 20996.2-2007 |
Performance of high-voltage direct current（HVDC）systems - Part 2: Faults and switching 高压直流系统的性能 第2部分：故障和操作 |
China National Standards switch |
English PDF |
| GB 7251.4-2006 |
Low-voltage switchgear and controlgear assemblies - Part 4 ：Particular requirements for assemblies for construction sites（ACS） 低压成套开关设备和控制设备 第4部分：对建筑工地用成套设备(ACS)的特殊要求 |
China National Standards switch |
English PDF |
| GB 15092.4-2006 |
switches for appliances Part 2：Particular requirements for independently mounted switches 器具开关 第2部分:独立安装开关的特殊要求 |
China National Standards switch |
English PDF |
| GB/T 14048.8-2006 |
Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors 低压开关设备和控制设备 第7-2部分：辅助器件 铜导体的保护导体接线端子排 |
China National Standards switch |
English PDF |
| GB/T 14048.7-2006 |
Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors 低压开关设备和控制设备 第7-1部分：辅助器件 铜导体的接线端子排 |
China National Standards switch |
English PDF |
| GB/T 14048.16-2006 |
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection(PTC) for rotating electrical machines 低压开关设备和控制设备 第8部分：旋转电机用装入式热保护（PTC）控制单元 |
China National Standards switch |
English PDF |
| GB/T 14048.15-2006 |
Low-voltage switchgear and controlgear - Part 5-6: Control circuit devices and switching elements - DC interface for proximity sensors and switching amplifiers(NAMUR) 低压开关设备和控制设备 第5-6部分：控制电路电器和开关元件-接近传感器和开关放大器的DC接口（NAMUR） |
China National Standards switch |
English PDF |
| GB/T 14048.14-2006 |
Low-voltage switchgear and controlgear - Part 5-5: Control circuit devices and switching elements - Electrical emergency stop device with mechanical latching function 低压开关设备和控制设备 第5-5部分：控制电路电器和开关元件-具有机械锁闩功能的电气紧急制动装置 |
China National Standards switch |
English PDF |
| GB/T 14048.13-2006 |
Low-voltage switchgear and controlgear - Part 5-3: Control circuit devices and switching elements - Requirements for proximity devices with defined behaviour under fault conditions(PDF) 低压开关设备和控制设备 第5-3部分：控制电路电器和开关元件-在故障条件下具有确定功能的接近开关（PDF）的要求 |
China National Standards switch |
English PDF |
| GB/T 14048.12-2006 |
Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters-AC semiconductor controllers and contactors for non-motor loads 低压开关设备和控制设备 第4-3部分：接触器和电动机起动器-非电动机负载用交流半导体控制器和接触器 |
China National Standards switch |
English PDF |
| GB 7251.3-2006 |
Low-voltage switchgear and controlgear assemblies - Part 3: Particular requirements for Low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use - Distribution boards 低压成套开关设备和控制设备 第3部分：对非专业人员可进入场地的低压成套开关设备和控制设备-配电板的特殊要求 |
China National Standards switch |
English PDF |
| GB 7251.2-2006 |
Low-voltage switchgear and controlgear assemblies - Part 2: Particular requirements for busbar trunking systems(busways) 低压成套开关设备和控制设备 第2部分：对母线干线系统（母线槽）的特殊要求 |
China National Standards switch |
English PDF |
| GB 3906-2006 |
Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV 3.6kV～40.5kV交流金属封闭开关设备和控制设备 |
China National Standards switch |
English PDF |
| GB 15209-2006 |
Magnetic switch intrusion detectors 磁开关入侵探测器 |
China National Standards switch |
English PDF |
| GB 5135.10-2006 |
Automatic sprinkler system-Part10:Pressure switch 自动喷水灭火系统 第10部分:压力开关 |
China National Standards switch |
English PDF |
| GB/T 16514.2-2005 |
Electromechanical switches for use in electronic equipment Part 5:Sectional specification for pushbutton switches Section 1-Blank detail specification 电子设备用机电开关 第5-1部分：按钮开关 空白详细规范 |
China National Standards switch |
English PDF |
| GB/T 1094.4-2005 |
Power transformers-Part 4:Guide to the lightning impulse and switching impulse testing-Power transformers and reactors 电力变压器 第4部分：电力变压器和电抗器的雷电冲击和操作冲击试验导则 |
China National Standards switch |
English PDF |
| GB/T 7251.8-2005 |
Low-Voltage switchgear and Controlgear assemblies General Technology Requirement for Intelligent Assemblies 低压成套开关设备和控制设备 智能型成套设备通用技术要求 |
China National Standards switch |
English PDF |
| GB/T 10233-2005 |
Basic testing method for low-voltage switchgear and controlgear assemblies 低压成套开关设备和电控设备基本试验方法 |
China National Standards switch |
English PDF |
| GB/T 18496.2-2005 |
Electromechanical switches for use in electronic equipment Part 4-1:Sectional specification for lever(toggle)switches Blank detail specification 电子设备用机电开关 第4-1部分:钮子(倒扳)开关 空白详细规范 |
China National Standards switch |
English PDF |
| GB 16895.22-2004 |
Electrical instal lations of buildings--Part 5-53:Selection and erection of electrical equipment isolation，switching and control--Section 534:Devices for protection against overvoltages 建筑物电气装置 第5-53部分:电气设备的选择和安装-隔离、开关和控制设备 第534节:过电压保护电器 |
China National Standards switch |
English PDF |
| GB 3804-2004 |
High-voltage alternating-current switches for rated voltage above 3.6 kV and less than 40.5 kV 3.6 kV~40.5 kV 高压交流负荷开关 |
China National Standards switch |
English PDF |
| GB/T 3382.2-2003 |
Technical requirements for group 3 facsimile apparatus used in public telephone network--Part 2:Procedures for document facsimile transmission in the general switched telephone network 文件传真三类机在电话网中的互通技术条件 第2部分:在公用电话交换网上的文件传真传输规程 |
China National Standards switch |
English PDF |
| GB/T 19334-2003 |
Dimension of low-voltage switchgear and controlgear--Standardized mounting on rails for mechanical support of electrical devices in switchgear andcontrolgear installations 低压开关设备和控制设备的尺寸 在成套开关设备和控制设备中作电器机械支承的标准安装轨 |
China National Standards switch |
English PDF |
| GB/T 7061-2003 |
Low-voltage switchgear and controlgearassemblies in ships 船用低压成套开关设备和控制设备 |
China National Standards switch |
English PDF |
| GB 16915.4-2003 |
switches for household and similar fixed-electrical installations--Part 2:Particular requirements--Section 3: Time-delay switches(TDS) 家用和类似用途固定式电气装置的开关 第2部分: 特殊要求 第3节: 延时开关 |
China National Standards switch |
English PDF |
| GB/T 6589-2002 |
Semiconductordevices--Discrete devices--Part 3-2:Signal (including switching) and regulator diodes--Blank detail specification for voltage-regulator diodes and voltage-reference diodes (excluding temperature-compensated precision reference diodes) 半导体器件 分立器件 第3-2部分:信号(包括开关)和调整二极管 电压调整二极管和电压基准二极管(不包括温度补偿精密基准二极管) 空白详细规范 |
China National Standards switch |
English PDF |
| GB/Z 18859-2002 |
Enclosed low-voltage switchgaer and controlgaer Assemblies--Guide for testing under conditions of arcing due to internal fault 封闭式低压成套开关设备和控制设备在内部故障引起电弧情况下的试验导则 |
China National Standards switch |
English PDF |
| GB/T 18498-2001 |
Interworking between packet switched public data networks and public maritime mobile satellite data transmission systems 分组交换公用数据网和公用海事移动卫星数据传输系统之间的互通 |
China National Standards switch |
English PDF |
| GB/T 18496-2001 |
Electromechanical switches for use in electronic equipment--Part 4:Sectional specification for lever(toggle) switches 电子设备用机电开关 第4部分:钮子(倒扳)开关分规范 |
China National Standards switch |
English PDF |
| GB/T 6588-2000 |
Semiconductor devices--Discrete devices--Part 3:Signal(including switching) and regulator diodes--Section One--Blank detail specification for signal diodes，switching diodes and controlled-avalanche diodes 半导体器件 分立器件 第3部分:信号(包括开关)和调整二极管 第1篇 信号二极管、开关二极管和可控雪崩二极管空白详细规范 |
China National Standards switch |
English PDF |
| GB 16915.3-2000 |
switches for household and similar fixed electrical installations--Part 2:Particular requirements--Section 2:Remote-control switches(RCS) 家用和类似用途固定式电气装置的开关 第2部分:特殊要求 第2节:遥控开关(RCS) |
China National Standards switch |
English PDF |
| GB/T 11634-2000 |
Marine A.C. low voltage switchboard general specification 船用交流低压配电板通用技术条件 |
China National Standards switch |
English PDF |
| GB/T 11598-1999 |
Packet-switched signalling system between public networks providing data transmission services 提供数据传输业务的公用网之间的分组交换信令系统 |
China National Standards switch |
English PDF |
| GB/T 17801-1999 |
Interface betweendata terminal equipment(DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet mode and accessing a packet switched public data network through a public switched telephone network or an integrated service 经公用交换电话网或综合业务数字网或电路交换公用数据网接入分组交换公用数据网的分组式数据终端设备(DTE)和数据电路终接设备(DCE)之间的接口 |
China National Standards switch |
English PDF |
| GB/T 13420-1998 |
Electromechanical switches for use in electronic equipment--Part 6:Sectional specification for sensitive switches--Section 1:Blank detail specification 电子设备用机电开关 第6部分:微动开关分规范 第1篇:空白详细规范 |
China National Standards switch |
English PDF |
| GB/T 13419-1998 |
Electromechanical switches for use in electronic equipment--Part 6:Sectional specification for sensitive switches 电子设备用机电开关 第6部分:微动开关分规范 |
China National Standards switch |
English PDF |
| GB/T 17210-1998 |
Electromechanical switches for use in electronic equipment--Part 2:Sectional specification for rotary switches--Sectional 1:Blank detail specification 电子设备用机电开关 第2部分:旋转开关分规范 第一篇 空白详细规范 |
China National Standards switch |
English PDF |
| GB/T 17209-1998 |
Electromechanical switches for use in electronic equipment--Part 2:Sectional specification for rotary switches 电子设备用机电开关 第2部分:旋转开关分规范 |
China National Standards switch |
English PDF |
| GB 16895.4-1997 |
Electrical installations of buildings--Part 5:Selection and erection of electrical equipment--Chapter 53:switchgear and controlgear 建筑物电气装置 第5部分:电气设备的选择和安装 第53章:开关设备和控制设备 |
China National Standards switch |
English PDF |
| GB/T 16514-1996 |
Electromechanical switches for use in electronic equipment--Part 5:Sectional specification for pushbutton switches 电子设备用机电开关 第5部分:按钮开关分规范 |
China National Standards switch |
English PDF |
| GB/T 6218-1996 |
Blank detail specification for bipolar transistors for switching applications 开关用双极型晶体管空白详细规范 |
China National Standards switch |
English PDF |
| GB/T 6571-1995 |
Semiconductordevices--Discrete devices--Part 3:Signal(including switching)and regulator diodes 半导体器件 分立器件 第3部分:信号(包括开关)和调整二极管 |
China National Standards switch |
English PDF |
| GB/T 15462-1995 |
Electromechanical switches for use in electronic equipments--Part 3-1:Blank detail specification for in-line package switches 电子设备用机电开关 第3-1部分:成列直插封装式开关 空白详细规范 |
China National Standards switch |
English PDF |
| GB/T 15461-1995 |
Electromechanicalswitches for use in electronic equipments--Part 3:Sectional specification for in-line package switches 电子设备用机电开关 第3部分:成列直插封装式开关分规范 |
China National Standards switch |
English PDF |
| GB/T 15449-1995 |
Blank detail-specification for field-effect transistors for case-rated switching application 管壳额定开关用场效应晶体管 空白详细规范 |
China National Standards switch |
English PDF |
| GB/T 2900.20-1994 |
Electrotechnical terminology--High-voltage switchgear 电工术语 高压开关设备 |
China National Standards switch |
English PDF |
| GB/T 14401-1993 |
Signalling between mobile station and base station and mobile services switching centre in public land mobile communication network at 450MHz band 公用陆地移动通信网(450 MHz频段)中移动台-基站-移动电话交换局之间的信令 |
China National Standards switch |
English PDF |
| GB/T 14028-1992 |
General principles of measuring methods of analogue switches for semiconductor integrated circuits 半导体集成电路模拟开关测试方法的基本原理 |
China National Standards switch |
English PDF |
| GB/T 13158-1991 |
Compatibility test procedures of clock and synchronization equipment of digital switch introducedinto digital network 数字交换机的时钟和同步设备进入数字网的兼容性测试方法 |
China National Standards switch |
English PDF |
| GB/T 12511-1990 |
Fibre optic switches--Part 1:Generic specification 纤维光学开关 第一部分:总规范(可供认证用) |
China National Standards switch |
English PDF |
| GB/T 11803-1989 |
Marine A.C. low voltage switchboard--Construction and basic dimension 船用交流低压配电板 结构及基本外形尺寸 |
China National Standards switch |
English PDF |
| GB/T 11023-1989 |
Test guide of SF6 gas tightness for high-voltage switchgear 高压开关设备六氟化硫气体密封试验方法 |
China National Standards switch |
English PDF |
| GB/T 3309-1989 |
Mechanical test at ambient temperature for high-voltage switchgear 高压开关设备常温下的机械试验 |
China National Standards switch |
English PDF |
| GB/T 9541-1988 |
2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type-circuits 在普通电话交换网和点对点二线租用电话型电路上使用标准化的回波抵消技术的2400比特/ 秒双工调制解调器 |
China National Standards switch |
English PDF |
| GB/T 9537-1988 |
Keyboard switches foruse in electronic equipment--Part 1:Generic specification 电子设备用键盘开关 第一部分:总规范 (可供认证用) |
China National Standards switch |
English PDF |
| GB/T 4958.9-1988 |
Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2:Mesurements for sub-systems--Section nine--Stand-by channel switching equipment 地面无线电接力系统所用设备的测量方法 第二部分:分系统的测量 第九节 备用通道倒换设备 |
China National Standards switch |
English PDF |
| GB/T 7625-1987 |
2400/1200 bits per second modem standardized for use in the general switched telephone network 在电话自动交换网上使用的标准化 2400/1200比特/秒调制解调器 |
China National Standards switch |
English PDF |
| GB/T 7623-1987 |
Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network， including procedures for bling of echo control devices for both manually and automatically established calls 在电话自动交换网上的自动应答设备和(或)并行自动呼叫设备， 包括人工和自动建立呼叫时使回波控制装置停止工作的规程 |
China National Standards switch |
English PDF |
| GB/T 7622-1987 |
600/1200 bauds modem standardized for use in the general switched telephone network 在电话自动交换网上使用的标准化600/1200波特调制解调器 |
China National Standards switch |
English PDF |
| GB/T 7621-1987 |
1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits 在电话自动交换网和点对点二线租用电话型电路上使用的标准化的1200比特/秒双工调制解调器 |
China National Standards switch |
English PDF |
| GB/T 7620-1987 |
300 bits per second duplex modem standardized for use in the general switched telephone network 在电话自动交换网上使用的标准化300比特/秒全双工调制解调器 |
China National Standards switch |
English PDF |
| GB/T 5444-1985 |
The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 电话自动交换网用户信号技术指标测试方法 |
China National Standards switch |
English PDF |
| GB/T 5443-1985 |
The test methods for the technical specifications of ringing and tone for automatic telephone switchingnetwork 电话自动交换网铃流和信号音技术指标测试方法 |
China National Standards switch |
English PDF |
| GB/T 5442-1985 |
The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 电话自动交换网带内单频脉冲线路信号技术指标测试方法 |
China National Standards switch |
English PDF |
| GB/T 3971.3-1983 |
The test methods for the technical specifications of multi-frequency register signalling for telephone auto-matic switching network 电话自动交换网多频记发器信号技术指标测试方法 |
China National Standards switch |
English PDF |
| GB 3971.2-1983 |
Interoffice junction digital line signalling system for telephone automatic switching network 电话自动交换网局间中继数字型线路信号方式 |
China National Standards switch |
English PDF |
| GB 3380-1982 |
Ringing and tone for telephone automatic switching network 电话自动交换网铃流和信号音 |
China National Standards switch |
English PDF |
| GB 3378-1982 |
Subscriber line signalling system for telephone automatic switching network 电话自动交换网用户信号方式 |
China National Standards switch |
English PDF |
| GB 3377-1982 |
Multifrequency register signalling system for telephone automatic switching network 电话自动交换网多频记发器信号方式 |
China National Standards switch |
English PDF |
| GB 3376-1982 |
Inband pulsing single frequencyline signalling system for telephone automatic switching network 电话自动交换网带内单频脉冲线路信号方式 |
China National Standards switch |
English PDF |
| GB/T 1989-1980 |
Methods for indication of the 7-bit encoding character set for information processing switching on 12.7 mm magnetic tape 信息处理交换用七位编码字符集在9磁道12.7 毫米磁带上的表示方法 |
China National Standards switch |
English PDF |
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