China National Standards

China automatic GB Standards List


  •  China "automatic" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 25151.1-2010 Fabrication and inspection method for high pressure urea equipment - Part 1: Ultrasonic examination on the automatic strip overlay welds of stainless steel
    尿素高压设备制造检验方法 第1部分:不锈钢带极自动堆焊层超声波检测
    China National Standards
    automatic

    English PDF
    GB 5135.16-2010 automatic sprinkler system - Part 16:Flexible sprinkler hose with fittings
    自动喷水灭火系统 第16部分:消防洒水软管
    China National Standards
    automatic

    English PDF
    GB/T 5135.20-2010 automatic sprinkler system - Part 20: Coating steel pipe
    自动喷水灭火系统 第20部分: 涂覆钢管
    China National Standards
    automatic

    English PDF
    GB/T 5135.19-2010 automatic sprinkler system - Part 19: Plastic pipe and fittings
    自动喷水灭火系统 第19部分:塑料管道及管件
    China National Standards
    automatic

    English PDF
    GB/T 25102.2-2010 Electroacoustics - Hearing aids - Part 2: Hearing aids with automatic gain control circuits
    电声学 助听器 第2部分:具有自动增益控制电路的助听器
    China National Standards
    automatic

    English PDF
    GB/T 25104-2010 Crude oil-automatic determination of water - RF method
    原油水含量的自动测定 射频法
    China National Standards
    automatic

    English PDF
    GB 50381-2010 Code for constructional quality acceptance of urban rail transit automatic fare collection system engineering
    城市轨道交通自动售检票系统工程质量验收规范
    China National Standards
    automatic

    English PDF
    GB/T 6730.66-2009 Iron ores - Determination of total iron content - automatic potentiometric titration method
    铁矿石 全铁含量的测定 自动电位滴定法
    China National Standards
    automatic

    English PDF
    GB/T 24379-2009 Textile machinery and accessories - Drop wires for warp stop motions for weaving machines with automatic drawing-in
    纺织机械与附件 自动穿经织机用停经片
    China National Standards
    automatic

    English PDF
    GB/T 24378-2009 Texile machinery and accessories - Drop wires for warp stop motions for weaving machines without automatic drawing-in
    纺织机械与附件 非自动穿经织机用停经片
    China National Standards
    automatic

    English PDF
    GB/T 10405-2009 Type designation for electrical machine for automatic control system
    控制电机型号命名方法
    China National Standards
    automatic

    English PDF
    GB/T 24367.1-2009 Technical requirements for automatically switched optical network (ASON) node - Part 1: Technical requirements for SDH-based ASON node
    自动交换光网络(ASON)节点设备技术要求 第1部分:基于SDH的ASON节点设备技术要求
    China National Standards
    automatic

    English PDF
    GB/T 21645.6-2009 Technical requirements for automatically switched optical network - Part 6: Management plane
    自动交换光网络(ASON)技术要求 第6部分:管理平面
    China National Standards
    automatic

    English PDF
    GB/T 21645.3-2009 Technical requirements for automatically switched optical network - Part 3: Data communication network
    自动交换光网络(ASON)技术要求 第3部分:数据通信网(DCN)
    China National Standards
    automatic

    English PDF
    GB/T 23704-2009 Information technology - automatic identification and data capture techniques - Bar code print quality test specification - Two-dimensional symbols
    信息技术 自动识别与数据采集技术 二维条码符号印制质量的检验
    China National Standards
    automatic

    English PDF
    GB/T 3609.2-2009 Occupational eye and face protection - Welding protection - Part 2: automatic welding filter
    职业眼面部防护 焊接防护 第2部分:自动变光焊接滤光镜
    China National Standards
    automatic

    English PDF
    GB/T 23256-2009 Petroleum liquids - automatic pipeline sampling - Statistical assessment of performance of automatic samplers determining the water content in hydrocarbon liquids
    石油液体管线自动取样 测定石油液体中水含量的自动取样器性能的统计学评估
    China National Standards
    automatic

    English PDF
    GB 8599-2008 Technical requirements for large steam sterilizers - automatic type
    大型蒸汽灭菌器技术要求 自动控制型
    China National Standards
    automatic

    English PDF
    GB 4706.96-2008 Household and similar electrical appliances - Safety - Particular requirements for automatic machines for floor treatment for commercial and industrial use
    家用和类似用途电器的安全 商业和工业用自动地板处理机的特殊要求
    China National Standards
    automatic

    English PDF
    GB 22134-2008 Compatibility requirements of automatic fire alarm system components
    火灾自动报警系统组件兼容性要求
    China National Standards
    automatic

    English PDF
    GB 14536.5-2008 automatic electrical controls for household and similar use - Particular requirements for thermal motor protectors for motor-compressors of hermetic and semi-hermetic type
    家用和类似用途电自动控制器 密封和半密封电动机-压缩机用电动机热保护器的特殊要求
    China National Standards
    automatic

    English PDF
    GB 14536.4-2008 automatic electrical controls for household and similar use - Particular requirements for thermal protectors for ballasts for tubular fluorescent lamps
    家用和类似用途电自动控制器 管形荧光灯镇流器热保护器的特殊要求
    China National Standards
    automatic

    English PDF
    GB 14536.21-2008 automatic electrical controls for household and similar use - Particular requirements for electrically operated oil valves, including mechanical requirements
    家用和类似用途电自动控制器 电动油阀的特殊要求, 包括机械要求
    China National Standards
    automatic

    English PDF
    GB 14536.20-2008 automatic electrical controls for household and similar use - Particular requirements for automatic electric water and air flow sensing controls, including mechanical requirements
    家用和类似用途电自动控制器 水流和气流敏感控制器的特殊要求, 包括机械要求
    China National Standards
    automatic

    English PDF
    GB 14536.15-2008 automatic electrical controls for household and similar use - Particular requirements for humidity sensing controls
    家用和类似用途电自动控制器 湿度敏感控制器的特殊要求
    China National Standards
    automatic

    English PDF
    GB 14536.13-2008 automatic electrical controls for household and similar use - Particular requirements for electrically operated door locks
    家用和类似用途电自动控制器 电动门锁的特殊要求
    China National Standards
    automatic

    English PDF
    GB 14536.11-2008 automatic electrical controls for household and similar use - Particular requirements for motor-starting relays
    家用和类似用途电自动控制器 电动机用起动继电器的特殊要求
    China National Standards
    automatic

    English PDF
    GB/T 23111-2008 Non-automatic weighing instrument
    非自动衡器
    China National Standards
    automatic

    English PDF
    GB/T 22654-2008 automatic steam traps - Technical specification
    蒸汽疏水阀 技术条件
    China National Standards
    automatic

    English PDF
    GB 9706.13-2008 Medical electrical equipment - Part 2: Particular requirements for the safety of automatically-controlled brachytherapy afterloading equipment
    医用电气设备 第2部分:自动控制式近距离治疗后装设备安全专用要求
    China National Standards
    automatic

    English PDF
    GB/T 50062-2008 Code for design of relaying protection and automatic device of electric power installation
    电力装置的继电保护和自动装置设计规范
    China National Standards
    automatic

    English PDF
    GB 12021.6-2008 Minimum allowable values of energy efficiency and energy efficiency grades for automatic electric rice cookers
    自动电饭锅能效限定值及能效等级
    China National Standards
    automatic

    English PDF
    GB 14536.9-2008 automatic electrical controls for household and similar use - Particular requirements for electrically operated water valves, including mechanical requirements
    家用和类似用途电自动控制器 电动水阀的特殊要求(包括机械要求)
    China National Standards
    automatic

    English PDF
    GB 14536.6-2008 automatic electrical controls for household and similar use - Particular requirements for automatic electrical burner control systems
    家用和类似用途电自动控制器 燃烧器电自动控制系统的特殊要求
    China National Standards
    automatic

    English PDF
    GB 14536.3-2008 automatic electrical controls for household and similar use - Particular requirements for thermal motor protectors
    家用和类似用途电自动控制器 电动机热保护器的特殊要求
    China National Standards
    automatic

    English PDF
    GB 14536.10-2008 automatic electrical controls for household and similar use - Particular requirements for temperature sensing controls
    家用和类似用途电自动控制器 温度敏感控制器的特殊要求
    China National Standards
    automatic

    English PDF
    GB/T 7345-2008 General requirements for electrical machine for automatic control system
    控制电机基本技术要求
    China National Standards
    automatic

    English PDF
    GB/T 2900.26-2008 Electrotechnical terminology - Electrical machine for automatic control system
    电工术语 控制电机
    China National Standards
    automatic

    English PDF
    GB/T 11805-2008 Basic specifications of automatic control components (devices) and their related system for hydroturbine-generating sets
    水轮发电机组自动化元件(装置)及其系统基本技术条件
    China National Standards
    automatic

    English PDF
    GB/T 4712-2008 automatic diesel generating set,requirements of classification for
    自动化柴油发电机组分级要求
    China National Standards
    automatic

    English PDF
    GB 5135.15-2008 automatic sprinkler system - Part 15: Domestic sprinklers
    自动喷水灭火系统 第15部分:家用喷头
    China National Standards
    automatic

    English PDF
    GB/T 21868.5-2008 Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 5: Dispersion using an automatic muller
    颜料和体质颜料 评定分散性用的分散方法 第5部分:用自动平磨机分散
    China National Standards
    automatic

    English PDF
    GB/T 18876.3-2008 Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 3: Determining the carbides rating in steels by automatic image analysis and stereology
    应用自动图像分析测定钢和其它金属中金相组织、夹杂物含量和级别的标准试验方法 第3部分 钢中碳化物级别的图像分析与体视学测定
    China National Standards
    automatic

    English PDF
    GB/T 21865-2008 Standard test methods for determining average grain size using semiautomatic and automatic image analysis
    用半自动和自动图象分析法测量平均粒度的标准测试方法
    China National Standards
    automatic

    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
    automatic

    English PDF
    GB/T 21540-2008 Hydraulic fluid power - On-line automatic particle-counting systems for liquids - Methods of calibration and validation
    液压传动 液体在线自动颗粒计数系统 校准和验证方法
    China National Standards
    automatic

    English PDF
    GB 14536.1-2008 automatic electrical controls for household and similar use - Part 1: General requirements
    家用和类似用途电自动控制器 第1部分:通用要求
    China National Standards
    automatic

    English PDF
    GB/T 21451.4-2008 Petroleum and liquid petroleum products - Measurement of level and temperature in storage tanks by automatic methods - Part 4: Measurement of temperature in atmospheric tanks
    石油和液体石油产品 储罐中液位和温度自动测量法 第4部分: 常压罐中的温度测量
    China National Standards
    automatic

    English PDF
    GB/T 21399-2008 Evaluating rule of automatic control system for grain driers
    粮食干燥机自动控制系统评定规则
    China National Standards
    automatic

    English PDF
    GB/T 7721-2007 Continuous totalizing automatic weighing instruments(electronic belt weighers)
    连续累计自动衡器(电子皮带秤)
    China National Standards
    automatic

    English PDF
    GB/T 21296-2007 automatic instruments for weighing road vehicles in motion
    动态公路车辆自动衡器
    China National Standards
    automatic

    English PDF
    GB/T 19882.31-2007 automatic meter reading system - Part 3-1: Application layer data exchange protocols - Object identification system
    自动抄表系统 第3-1部分:应用层数据交换协议 对象标识系统
    China National Standards
    automatic

    English PDF
    GB/T 19882.33-2007 automatic meter reading system - Part 3-3: Application layer data exchange protocol - COSEM Application layer
    自动抄表系统 第3-3部分:应用层数据交换协议 COSEM应用层
    China National Standards
    automatic

    English PDF
    GB/T 19882.32-2007 automatic meter reading system - Part 3-2: Application layer data exchange protocols - Interface Clasess
    自动抄表系统 第3-2部分:应用层数据交换协议 接口类
    China National Standards
    automatic

    English PDF
    GB/T 20907-2007 Technical requirements for automatic fare collection system of urban rail transportation
    城市轨道交通自动售检票系统技术条件
    China National Standards
    automatic

    English PDF
    GB/T 20721-2006 General specifications of automatic guided vehicles
    自动导引车 通用技术条件
    China National Standards
    automatic

    English PDF
    GB/T 18876.2-2006 Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 2: Determining the inclusion ratings of steels by automatic image analysis and stereology
    应用自动图像分析测定钢和其它金属中金相组织、夹杂物含量和级别的标准试验方法 第2部分:钢中夹杂物级别的图像分析与体视学测定
    China National Standards
    automatic

    English PDF
    GB 14536.19-2006 automatic electrical controls for household and similar use - Particular requirements for electrically operated gas valves, including mechanical requirements
    家用和类似用途电自动控制器 电动燃气阀的特殊要求,包括机械要求
    China National Standards
    automatic

    English PDF
    GB 14536.18-2006 automatic electrical controls for household and similar use - Particular requirements for automatic electrical water level controls of the float type for household and similar applications
    家用和类似用途电自动控制器 家用和类似应用浮子型水位控制器的特殊要求
    China National Standards
    automatic

    English PDF
    GB 16806-2006 automatic control system for fire protection
    消防联动控制系统
    China National Standards
    automatic

    English PDF
    GB 5135.9-2006 automatic sprinkler system-Part9:Early Suppression Fast Response(ESFR) Automatic Sprinklers
    自动喷水灭火系统 第9部分 早期抑制快速响应(ESFR)喷头
    China National Standards
    automatic

    English PDF
    GB 5135.13-2006 automatic sprinkler system Part 13:Performance requirements and test methods of drencher head
    自动喷水灭火系统 第13部分:水幕喷头
    China National Standards
    automatic

    English PDF
    GB 5135.12-2006 automatic sprinkler system-Part12:Extended coverage sprinkler
    自动喷水灭火系统 第12部分:扩大覆盖面积洒水喷头
    China National Standards
    automatic

    English PDF
    GB 5135.11-2006 automatic sprinkler system-Part 11:grooved couplings and fittings
    自动喷水灭火系统 第11部分:沟槽式管接件
    China National Standards
    automatic

    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
    automatic

    English PDF
    GB/T 14285-2006 Technical code for relaying protection and security automatic equipment
    继电保护和安全自动装置技术规程
    China National Standards
    automatic

    English PDF
    GB/T 12786-2006 automatic electric power plant with internal combustion engines for general specification
    自动化内燃机电站通用技术条件
    China National Standards
    automatic

    English PDF
    GB/T 20204-2006 General testing specification of automatic system equipment for water resources and hydrology
    水利水文自动化系统设备检验测试通用技术规范
    China National Standards
    automatic

    English PDF
    GB/T 20068-2006 Technical requirements of shipborne automatic identification system
    船载自动识别系统(AIS)技术要求
    China National Standards
    automatic

    English PDF
    GB/T 19897.4-2005 automatic Meter Reading System Lower Layer Communication Protocol Part 4:Data link layer using HDLC protocol
    自动抄表系统低层通信协议 第4部分:基于HDLC协议的链路层
    China National Standards
    automatic

    English PDF
    GB/T 19897.3-2005 automatic Meter Reading System Lower Layer Communication Protocol Part 3:Physical layer services and procedures for connection oriented asynchronous data exchange
    自动抄表系统低层通信协议 第3部分:面向连接的异步数据交换的物理层服务进程
    China National Standards
    automatic

    English PDF
    GB/T 19897.2-2005 automatic Meter Reading System Lower Layer Communication Protocol Part 2:Use of area networks on twisted pair with carrier signalling
    自动抄表系统低层通信协议 第2部分:基于双绞线载波信号的局域网使用
    China National Standards
    automatic

    English PDF
    GB/T 19897.1-2005 automatic Meter Reading System Lower Layer Communication Protocol Part 1:Direct local data exchange
    自动抄表系统低层通信协议 第1部分:直接本地数据交换
    China National Standards
    automatic

    English PDF
    GB/T 19882.1-2005 automatic Meter Reading System Part 1:General Principles
    自动抄表系统 第1部分:总则
    China National Standards
    automatic

    English PDF
    GB 14536.17-2005 automatic electrical controls for household and similar use Part 2:particular requirements for automatic electrical water level sensing controls of the float or electrode-sensor type used in boiler applications
    家用和类似用途电自动控制器 第2部分:锅炉器具中使用的浮子型或电极敏感型水位敏感电自动控制器的特殊要求
    China National Standards
    automatic

    English PDF
    GB/T 12251-2005 automatic steam traps-Test methods
    蒸汽疏水阀 试验方法
    China National Standards
    automatic

    English PDF
    GB/T 12250-2005 automatic steam traps-Term、Marking、Face-to-face dimensions
    蒸汽疏水阀 术语、标志、结构长度
    China National Standards
    automatic

    English PDF
    GB/Z 19798-2005 Agricultural irrigation equipment-automatic irrigation systems-Hydraulic control
    农业灌溉设备 自动灌溉系统 水力控制
    China National Standards
    automatic

    English PDF
    GB/T 14258-2003 Information technology--automatic identification and data capture techniques--Verification ofprint quality of bar code symbols
    信息技术 自动识别与数据采集技术 条码符号印制质量的检验
    China National Standards
    automatic

    English PDF
    GB 5135.8-2003 automatic sprinkler system--Part 8: Accelerator
    自动喷水灭火系统 第8部分: 加速器
    China National Standards
    automatic

    English PDF
    GB 5135.7-2003 automatic sprinkler system--Part7: Water flow indicator
    自动喷水灭火系统 第7部分: 水流指示器
    China National Standards
    automatic

    English PDF
    GB 5135.6-2003 automatic sprinkler system--Part 6: Convention valve
    自动喷水灭火系统 第6部分: 通用阀门
    China National Standards
    automatic

    English PDF
    GB 5135.5-2003 automatic sprinkler system--Part5: Deluge alarm valves
    自动喷水灭火系统 第5部分: 雨淋报警阀
    China National Standards
    automatic

    English PDF
    GB 5135.4-2003 automatic sprinkler system--Part4: Dry pipe valves
    自动喷水灭火系统 第4部分: 干式报警阀
    China National Standards
    automatic

    English PDF
    GB 5135.3-2003 automatic sprinkler system--Part 3: Water mist nozzles
    自动喷水灭火系统 第3部分: 水雾喷头
    China National Standards
    automatic

    English PDF
    GB 5135.2-2003 automatic sprinkler system--Part 2:Wet system alarm valves,retard chamber,water motor alarm
    自动喷水灭火系统 第2部分: 湿式报警阀、延迟器、水力警铃
    China National Standards
    automatic

    English PDF
    GB 5135.1-2003 automatic sprinkler system--Part 1: Sprinkler
    自动喷水灭火系统 第1部分:洒水喷头
    China National Standards
    automatic

    English PDF
    GB/T 16829-2003 Information technology--automatic identification and data capture techniques--Bar code symbology specifications--Interleaved 2 of 5
    信息技术 自动识别与数据采集技术 条码码制规范 交插二五条码
    China National Standards
    automatic

    English PDF
    GB/T 18876.1-2002 Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis--Part 1:Determining the inclusion or second-phase constituent content of steels and other metals by automatic
    应用自动图像分析测定钢和其他金属中金相组织、夹杂物含量和级别的标准试验方法 第1部分:钢和其他金属中夹杂物或第二相组织含量的图像分析与体视学测定
    China National Standards
    automatic

    English PDF
    GB/T 18854-2002 Hydraulic fluid power--Calibration of liquid automatic particle counters
    液压传动 液体自动颗粒计数器的校准
    China National Standards
    automatic

    English PDF
    GB/T 15279-2002 The specifications of automatic telephone set
    自动电话机技术条件
    China National Standards
    automatic

    English PDF
    GB/T 12908-2002 Information technology--automatic identification and data capture technique--Bar code symbology specifications--Code 39
    信息技术 自动识别和数据采集技术 条码符号规范 三九条码
    China National Standards
    automatic

    English PDF
    GB/T 11711-2002 Marine automatic radar plotting aids(ARPA)--Performance requirements,methods of testing and required test results
    船用自动雷达标绘仪(ARPA)性能要求、测试方法和要求的测试结果
    China National Standards
    automatic

    English PDF
    GB/T 18690.3-2002 Agricultural irrigation equipment--Filters--automatic self-cleaning strainer-type filters
    农业灌溉设备 过滤器 自动清洗网式过滤器
    China National Standards
    automatic

    English PDF
    GB/T 18154-2000 Technical specification of automatic dust explosion suppression devices
    监控式抑爆装置技术要求
    China National Standards
    automatic

    English PDF
    GB/T 17894-1999 Freight containers--automatic identification
    集装箱自动识别
    China National Standards
    automatic

    English PDF
    GB/T 17887-1999 Industrial robots--automatic end effector exchange systems--Vocabulary and presentation of characteristics
    工业机器人 末端执行器自动更换系统 词汇和特性表示
    China National Standards
    automatic

    English PDF
    GB/T 17308-1998 Definitions of parameters for simplified automatic measurement of television insertion test signals
    电视插入测试信号简化自动测量参数的定义
    China National Standards
    automatic

    English PDF
    GB/T 15542-1995 Technical requirements of digital SPC automatic telephone exchange
    数字程控自动电话交换机技术要求
    China National Standards
    automatic

    English PDF
    GB/T 15511-1995 General requirements for electrical automatic control systems of sea-going ships
    海洋船电气自动化系统一般要求
    China National Standards
    automatic

    English PDF
    GB/T 14716-1993 Generic specification for stored program control analogue private automatic branch telephone exchange system
    程控模拟用户自动电话交换机通用技术条件
    China National Standards
    automatic

    English PDF
    GB/T 14381-1993 Generic specification for stored program control digital private automatic branch telephone exchange system
    程控数字用户自动电话交换机通用技术条件
    China National Standards
    automatic

    English PDF
    GB/T 14331-1993 automatic spring winding machine--Testing of the accuracy
    自动卷簧机 精度
    China National Standards
    automatic

    English PDF
    GB/T 4168-1992 Non-automatic balance--Beam balance
    非自动天平 杠杆式天平
    China National Standards
    automatic

    English PDF
    GB/T 12712-1991 The requirements for supervision of recovery of condensate from steam heating system and technique ofautomatic steam traps
    蒸汽供热系统凝结水回收及蒸汽疏水阀技术管理要求
    China National Standards
    automatic

    English PDF
    GB/T 12247-1989 automatic steam traps--Classification
    蒸汽疏水阀 分类
    China National Standards
    automatic

    English PDF
    GB/T 11015-1989 Interface between data terminal equipment and automatic calling equipment for data communication
    数据通信用数据终端设备和自动呼叫设备之间的接口
    China National Standards
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    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
    automatic

    English PDF

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