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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 20175-2006 |
Surface chemical analysis-Sputter depth profiling-Optimization using layered systems as reference materials 表面化学分析 溅射深度剖析 用层状膜系为参考物质的优化方法 |
China National Standards using |
 English PDF |
| GB/T 20379-2006 |
Starch derivatives - Determination of the composition of glucose syrups,fructose syrups and hydrogenated glucose syrups - Method using high-performance liquid chromatography 淀粉衍生物 葡萄糖浆、果糖浆和氢化葡萄糖浆成分的测定 高效液相色谱法 |
China National Standards using |
English PDF |
| GB/T 20376-2006 |
Modified starch - Determination of hydroxypropyl content - Method using proton nuclear magnetic resonance (NMR) spectrometry 变性淀粉中羟丙基含量的测定 质子核磁共振波谱法 |
China National Standards using |
English PDF |
| GB/T 20120.2-2006 |
Corrosion of metals and alloys -- Corrosion fatigue testing -- Part 2: Crack propagation testing using precracked specimens 金属和合金的腐蚀 腐蚀疲劳试验 第2部分：预裂纹试验裂纹扩展试验 |
China National Standards using |
English PDF |
| GB/T 20082-2006 |
Hydraulic fluid power -- Fluid contamination -- Determination of particulate contamination by the counting method using an optical microscope 液压传动 液体污染 采用光学显微镜测定颗粒污染度的方法 |
China National Standards using |
English PDF |
| GB/T 20176-2006 |
Surface chemical analysis-Secondary-ion mass spectrometry-Determination of boron atomic concentration in silicon using uniformly doped materials 表面化学分析 二次离子质谱 用均匀掺杂物质测定硅中硼的原子浓度 |
China National Standards using |
English PDF |
| GB/T 20175-2006 |
Surface chemical analysis-Sputter depth profiling-Optimization using layered systems as reference materials 表面化学分析 溅射深度剖析 用层状膜系为参考物质的优化方法 |
China National Standards using |
English PDF |
| GB/T 11045.13-2005 |
Textiles-Tests for color fastness-Miscellaneous tests part13:Colour fastness of wool dyes to processes using chemical means for creasing pleating and setting 纺织品 色牢度试验 其他实验第13部分:染色毛纺织品耐化学褶被、褶裥和定型加工色牢度 |
China National Standards using |
English PDF |
| GB/T 11785-2005 |
Reaction to fire tests for floorings-Determination of the burning behaviour using a radiant heat source 铺地材料的燃烧性能测定 辐射热源法 |
China National Standards using |
English PDF |
| GB/T 3452.3-2005 |
Housing dimensions for O-ring elastomer seals in hydraulic and pneumatic applications 液压气动用O形橡胶密封圈 沟槽尺寸 |
China National Standards using |
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 using |
English PDF |
| GB/T 14614.4-2005 |
Determination of rheological properties of dough using alveograph 小麦粉面团流变特性测定 吹泡仪法 |
China National Standards using |
English PDF |
| GB/T 13085-2005 |
Determination of nitrite in feeds-Method using colorimetric analysis 饲料中亚硝酸盐的测定-比色法 |
China National Standards using |
English PDF |
| GB 4715-2005 |
Smoke detectors-Point detectors using scattered light,transmitted light or ionization 点型感烟火灾探测器 |
China National Standards using |
English PDF |
| GB 14003-2005 |
Smoke detectors-Line detectors using an optical light beam 线型光束感烟火灾探测器 |
China National Standards using |
English PDF |
| GB/T 19856.2-2005 |
Lightning protection-Telecommunication lines-Part 2:Lines using metallic conductors 雷电防护 通信线路 第2部分：金属导线 |
China National Standards using |
English PDF |
| GB/T 2879-2005 |
Hydraulic fluid power-Cylinders-Housings for piston and rod seals in reciprocating applications-Dimensions and tolerances 液压缸活塞和活塞杆动密封 沟槽尺寸和公差 |
China National Standards using |
English PDF |
| GB/T 4857.10-2005 |
Packaging-Basic tests for transport packages-Part 10:Sinusoidal vibration test method using at variable vibration frequency 包装 运输包装件基本试验 第10部分:正弦变频振动试验方法 |
China National Standards using |
English PDF |
| GB/T 19789-2005 |
Packaging Material Standard Test Method for Oxygen Gas Permeability Characteristics of Plastic Film and Sheeting using a Coulometric Sensor 包装材料 塑料薄膜和薄片氧气透过性试验 库仑计检测法 |
China National Standards using |
English PDF |
| GB 19741-2005 |
The plastics laminated films and bags using for packaging of liquid food 液体食品包装用塑料复合膜、袋 |
China National Standards using |
English PDF |
| GB/T 10561-2005 |
Steel-Determination of content of nonmetallic inclusions-Micrographic method using standards diagrams 钢中非金属夹杂物含量的测定--标准评级图显微检验法 |
China National Standards using |
English PDF |
| GB/T 15843.5-2005 |
Information technology-Security techniques-Entity authentication-Part 5:Mechanisms using zero knowledge techniques 信息技术 安全技术 实体鉴别 第5部分:使用零知识技术的机制 |
China National Standards using |
English PDF |
| GB/T 19609-2004 |
Cigarette--Determination of total and nicotine-free dry particulate matter using a routine analytical smoking machine 卷烟 用常规分析用吸烟机测定 总粒相物和焦油 |
China National Standards using |
English PDF |
| GB/T 16857.5-2004 |
Geometrical Product Specifications(GPS)--Acceptance and reverification tests for coordinate measuring machines(CMM)--Part 5:CMMs using multiple-stylus probing systems 产品几何量技术规范(GPS) 坐标测量机的验收检测和复检检测 第5部分:使用多探针探测系统的坐标测量机 |
China National Standards using |
English PDF |
| GB/T 19587-2004 |
Determination of the specific surface area of solids by gas adsorption using the BET method 气体吸附BET法测定固态物质比表面积 |
China National Standards using |
English PDF |
| GB/T 13080-2004 |
Determination of lead in feeds--Method using atomic absorption spectrometry 饲料中铅的测定 原子吸收光谱法 |
China National Standards using |
English PDF |
| GB/T 18696.1-2004 |
Acoustics--Determination of sound absorption coefficient and impedance in impedance tubes--Part 1:Method using standing wave ratio 声学 阻抗管中吸声系数和声阻抗的测量 第1部分:驻波比法 |
China National Standards using |
English PDF |
| GB/T 19440-2004 |
Protocol of detecting avian influenza virus using NASBA 禽流感病毒NASBA检测方法 |
China National Standards using |
English PDF |
| GB/T 19439-2004 |
Protocol of detecting avian influenza virus subtype H5 using NASBA H5亚型禽流感病毒NASBA检测方法 |
China National Standards using |
English PDF |
| GB/T 6609.28-2004 |
Chemical analysis methods and determination of physical performance of alumina--Determination of the fine particle size distribution(less than 60μm)--Method using electroformed sieves 氧化铝化学分析方法和物理性能测定方法 小于60μm的细粉末粒度分布的测定 湿筛法 |
China National Standards using |
English PDF |
| GB/T 13885-2003 |
Animal feeding stuffs--Determination of thecontents of calcium，copper，iron，magnesium，manganese，potassium，sodium and zinc--Method using atomic absorption spectrometry 动物饲料中钙、铜、铁、镁、锰、钾、钠和锌含量的测定 原子吸收光谱法 |
China National Standards using |
English PDF |
| GB 19344-2003 |
Technique requirement and test method of leaking-safety of gas supply system on using gas vehicle 在用燃气汽车燃气供给系统泄漏安全技术要求及检验方法 |
China National Standards using |
English PDF |
| GB/T 7761-2003 |
Rubber--Determination of adhesion to rigid materials using conical shaped parts 橡胶 用锥形件测定与刚性材料的粘合强度 |
China National Standards using |
English PDF |
| GB/T 19247.1-2003 |
Printed board assemblies--Part 1: Generic specification--Requirements for soldered electrical and electronic assemblies using surface mount and related assembly technologies 印制板组装 第1部分:通用规范 采用表面安装和相关组装技术的电子和电气焊接组装的要求 |
China National Standards using |
English PDF |
| GB/T 18778.2-2003 |
Geometrical Product Specifications(GPS)--Surface texture: Profile method--Surface having stratified functional properties--Part 2: Height characterization using the linear material ratio curve 产品几何量技术规范(GPS) 表面结构 轮廓法 具有复合加工特征的表面 第2部分: 用线性化的支承率曲线表征高度特性 |
China National Standards using |
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| GB/T 18996-2003 |
Determination of silver in silver jewellery alloys--Volumertic(potentiometric) method using sodium chloride or potassium chloride 银合金首饰中含银量的测定 氯化钠或氯化钾容量法(电位滴定法) |
China National Standards using |
English PDF |
| GB/T 18977-2003 |
Ergonomics of the thermal environment--Assessment of the influence of the thermal environment usingsubjective judgement scales 热环境人类工效学 使用主观判定量表评价热环境的影响 |
China National Standards using |
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| GB/T 13477.3-2002 |
Test method for building sealants--Part 3:Determination of extrudability of sealants using standardized apparatus 建筑密封材料试验方法 第3部分:使用标准器具测定密封材料挤出性的方法 |
China National Standards using |
English PDF |
| GB/T 18238.2-2002 |
Information technology--Security techniques--Hash-functions--Part 2:Hash-functions using an n-bit block cipher 信息技术 安全技术 散列函数 第2部分:采用n位块密码的散列函数 |
China National Standards using |
English PDF |
| GB/T 18747.2-2002 |
The determination of shear strength of anaerobic adhesives using pin-and-collar specimens 厌氧胶粘剂剪切强度的测定(轴和套环试验法) |
China National Standards using |
English PDF |
| GB/T 16744-2002 |
Thermal spraying--Spraying and fusing of self-fluxing alloys 热喷涂 自熔合金喷涂与重熔 |
China National Standards using |
English PDF |
| GB/T 6881.3-2002 |
Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering methods for small，movable sources in reverberant fields--Part 2:Methods for special reverberation test rooms 声学 声压法测定噪声源声功率级 混响场中小型可移动声源工程法 第2部分:专用混响测试室法 |
China National Standards using |
English PDF |
| GB/T 6881.1-2002 |
Acoustics--Determination of sound power levels of noise sources using sound pressure--Precision methods for reverberation rooms 声学 声压法测定噪声源声功率级 混响室精密法 |
China National Standards using |
English PDF |
| GB/T 18660-2002 |
Measurement of conductive liquid flow in closed conduits--Method using electromagnetic flowmeters 封闭管道中导电液体流量的测量 电磁流量计的使用方法 |
China National Standards using |
English PDF |
| GB 50327-2001 |
Code for construction of decoration of housings 住宅装饰装修工程施工规范 |
China National Standards using |
English PDF |
| GB 4793.4-2001 |
Safety requirements for electrical equipment for measurement，control and laboratory use--Particular requirements for autoclaves using steam for the treatment of medical materials and for laboratory process 测量、控制及实验室用电气设备的安全 实验室用处理医用材料的蒸压器的特殊要求 |
China National Standards using |
English PDF |
| GB/T 18460.3-2001 |
Pre-payment vending system using integrated circuit(s)cards with contacts--Part 3:Pre-payment elect-ricity meters IC卡预付费售电系统 第3部分:预付费电度表 |
China National Standards using |
English PDF |
| GB/T 18460.2-2001 |
Pre-payment vending system using integrated circuit(s)cards with contacts--Part 2:IC card and its management IC卡预付费售电系统 第2部分:IC卡及其管理 |
China National Standards using |
English PDF |
| GB/T 18460.1-2001 |
Pre-payment vending system using integrated circuit(s)cards with contacts--Part 1:General principles IC卡预付费售电系统 第1部分:总则 |
China National Standards using |
English PDF |
| GB 18454-2001 |
Laminated bags using for aseptic package of liquid food 液体食品无菌包装用复合袋 |
China National Standards using |
English PDF |
| GB/T 1236-2000 |
Industrial fans--Performance testing using standardized airways 工业通风机 用标准化风道进行性能试验 |
China National Standards using |
English PDF |
| GB/T 1232.1-2000 |
Rubber，unvulcanized--Determinations using a shearing-disc viscometer--Part 1:Determination of Mooney viscosity 未硫化橡胶 用圆盘剪切粘度计进行测定 第1部分:门尼粘度的测定 |
China National Standards using |
English PDF |
| GB/T 18141-2000 |
Information technology--Information interchange on 130 mm optical disk cartridges using themagneto-optical effect，for write once，read multiple functionality 信息技术 130 mm一次写入多次读出磁光盒式光盘的信息交换 |
China National Standards using |
English PDF |
| GB/T 18105-2000 |
Method for determination of the processing degree of rice and other grain kernels using iso-color-phase differential staining(IDS) 米类加工精度异色相差分染色检验法(IDS法) |
China National Standards using |
English PDF |
| GB/Z 17978-2000 |
Information processing--SGML support facilities--Techniques for using SGML 信息处理 SGML支持设施 SGML使用技术 |
China National Standards using |
English PDF |
| GB/T 17960-2000 |
Information technology--Data interchange on 90 mm flexible disk cartridges using modified frequency modulation recording at 31 831 ftprad on 80 tracks on each side--GB type 303 信息技术 数据交换用90 mm改进调频制记录的位密度为31 831磁通翻转/弧度、每面80磁道的软磁盘 GB 303型 |
China National Standards using |
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| GB/T 7399.3-1999 |
Helical-scan video tape cassette system using 12.65 mm magnetic tape on type S-VHS S-VHS型12.65 mm螺旋扫描盒式磁带录像系统 |
China National Standards using |
English PDF |
| GB/T 17800.3-1999 |
Helical-scan video tape cassette systems using 8 mm magnetic tape--8 mm video--Part 3:High-band speci-fications for Hi 8 8 mm磁带螺旋扫描盒式录像系统(8 mm录像) 第3部分:Hi 8高带规范 |
China National Standards using |
English PDF |
| GB/T 17800.2-1999 |
Helical-scan video tape cassette systems using 8 mm magnetic tape--8 mm video--Part 2:PCM multi-track audio system 8 mm磁带螺旋扫描盒式录像系统(8 mm录像) 第2部分:PCM多迹音频系统 |
China National Standards using |
English PDF |
| GB/T 17800.1-1999 |
Helical-scan video tape cassette systems using 8 mm magnetic tape--8 mm video--Part 1:General speci-fications 8 mm磁带螺旋扫描盒式录像系统(8 mm录像) 第1部分:总规范 |
China National Standards using |
English PDF |
| GB/T 16404.2-1999 |
Acoustics--Determination of sound power levels of noise sources using sound intensity--Part 2:Measurement by scanning 声学 声强法测定噪声源的声功率级 第2部分:扫描测量 |
China National Standards using |
English PDF |
| GB/T 17588-1998 |
Basic terminology for grinding processes using grinding wheels 砂轮磨削 基本术语 |
China National Standards using |
English PDF |
| GB/T 14006.3-1997 |
Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment--Part 3:Transformers and inductors using YUI-1 laminations 通信和电子设备用变压器和电感器外形尺寸 第3部分:使用YUI-1系列铁心片的变压器和电感器 |
China National Standards using |
English PDF |
| GB/T 14006.2-1997 |
Outline dimemsions of transformers and inductors for use in telecommunication and electronic equipmemt--Part 2:Transformers and inductors using YEx-2 laminations for printed wiring boardmounting 通信和电子设备用变压器和电感器外形尺寸 第2部分:采用YEx-2系列铁心片印制板安装式变压器和电感器 |
China National Standards using |
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| GB/T 16858-1997 |
A far end camera control protocol for videoconfer-ences using data link protocol 采用数据链路协议的会议电视远端摄像机控制规程 |
China National Standards using |
English PDF |
| GB/T 16790.1-1997 |
Financial transaction cards--Security architecture of financial transaction systems using integrated circuit cards--Part 1:Card life cycle 金融交易卡 使用集成电路卡的金融交易系统的安全结构 第1部分:卡的生命周期 |
China National Standards using |
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| GB/T 16539-1996 |
Acoustics--Determination of sound power levels of noise sources using vibration velocity--Measurement for seal machinery 声学 振速法测定噪声源声功率级 用于封闭机器的测量 |
China National Standards using |
English PDF |
| GB/T 16438-1996 |
The safety demands of using semiconductor lightning eliminator 半导体少长针消雷装置使用的安全要求 |
China National Standards using |
English PDF |
| GB/T 3768-1996 |
Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using an enveloping measurement surface over a reflecting plane 声学 声压法测定噪声源声功率级 反射面上方采用包络测量表面的简易法 |
China National Standards using |
English PDF |
| GB/T 3767-1996 |
Acoustics--Determination of sound power levels of noise sources using sound pressure--Engineering method in an essentially free field over a reflecting plane 声学 声压法测定噪声源声功率级 反射面上方近似自由场的工程法 |
China National Standards using |
English PDF |
| GB/T 16404-1996 |
Acoustics--Determination of sound power levels of noise sources using sound intensity--Part 1:Measurement at discrete points 声学 声强法测定噪声源的声功率级 第1部分:离散点上的测量 |
China National Standards using |
English PDF |
| GB 16369-1996 |
Radiological protection standard for using of medical electron accelerator 医用电子加速器放射卫生防护标准 |
China National Standards using |
English PDF |
| GB 16367-1996 |
Radiological protection standards for using geothermal water 地热水应用中的放射卫生防护标准 |
China National Standards using |
English PDF |
| GB 16354-1996 |
Radiological protection requirements for using sealed radioactive sources 使用密封放射源的放射卫生防护要求 |
China National Standards using |
English PDF |
| GB/T 15939-1995 |
General specification for land mobile communication system equipment using multi-channel access techniques without a central controller 无中心多信道选址移动通信系统设备通用规范 |
China National Standards using |
English PDF |
| GB/T 7809-1995 |
Roliing bearings--Housings for insertbearing--Boundary dimensions 滚动轴承 外球面球轴承座外形尺寸 |
China National Standards using |
English PDF |
| GB/T 15845.3-1995 |
Performance requirements of audiovisual terminals--System for establishing communication between audiovisual terminals using digital channels up to 2Mbit/s 视听用户终端技术要求 使用2Mbit/s以内数字信道的视听用户终端之间建立通信的方法 |
China National Standards using |
English PDF |
| GB/T 15130.2-1995 |
Information processing--Data interchange on 90mm flexible disk cartridges using modified frequency modulation recording at15916 ftprad， on 80 tracks on each side--Part 2:Track format 信息处理 数据交换用90 mm改进调频制记录的位密度为15916磁通翻转/弧度、每面80条磁道的软磁盘 第二部分:磁道格式 |
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| GB/T 9405-1995 |
Performance and test methods of the third order digital multiplex equipment operating at 34368 kbit/s and using positive justification 34368kbit/s 正码速调整三次群数字复用设备技术要求和测试方法 |
China National Standards using |
English PDF |
| GB/T 7254-1995 |
Performanceand methods of the second order digital multiplex equipment operating at 8448 kbit/s and using positive justification 8448 kbit/s正码速调整二次群数字复用设备技术要求和测试方法 |
China National Standards using |
English PDF |
| GB/T 15131.3-1995 |
Information processing--Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad， on 80 tracks on each side--Part 3:Track formatB for 80 tracks 信息处理 数据交换用130 mm改进调频制记录的位密度为13262磁通翻转/弧度、每面80条磁道的软磁盘 第三部分:磁道格式B(用于80条磁道) |
China National Standards using |
English PDF |
| GB/T 15131.2-1995 |
Information processing--Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad， on 80 tracks on each side--Part 2:Track format A for 77 tracks 信息处理 数据交换用130 mm改进调频制记录的位密度为13262磁通翻转/弧度、每面80条磁道的软磁盘 第二部分:磁道格式 A ( 用于77条磁道) |
China National Standards using |
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| GB/T 11324-1995 |
Performance and test methods of the fourth order digital multiplex equimpent operatingat 139264 kbit/s and using positive justification 139264kbit/s正码速调整四次群数字复用设备技术要求和测试方法 |
China National Standards using |
English PDF |
| GB/T 15522-1995 |
FM audio recording of helical-scan video tape cassette system using 12.65mm magnetic tape on type VHS VHS型12.65 mm螺旋扫描盒式录像系统的调频音频记录 |
China National Standards using |
English PDF |
| GB/T 15242.4-1994 |
Hydraulic fluid power--Cylinder rod and piston seals for reciprocating applications of bearing rings--Dimensions and tolerances of housings 液压缸活塞和活塞杆动密封装置用支承环安装沟槽尺寸系列和公差 |
China National Standards using |
English PDF |
| GB/T 15242.3-1994 |
Hydraulic fluid power--Cylinder rod and piston seals for reciprocating applications of Co-axial seals--Dimensions and tolerances of housings 液压缸活塞和活塞杆动密封装置用同轴密封件安装沟槽尺寸系列和公差 |
China National Standards using |
English PDF |
| GB/T 15131.1-1994 |
Information processing--Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad，on 80 tracks on each side--Part 1:Dimensional， physical and magnetic characteristics 信息处理 数据交换用130 mm改进调频制记录的位密度为13262 磁通翻转/弧度、每面80条磁道的软磁盘 第一部分:尺寸、物理性能和磁性能 |
China National Standards using |
English PDF |
| GB/T 15130.1-1994 |
Information processing--Data interchange on 90mm (35in) flexible disk cartridges using modified frequency modulation recording at 15916 ftprad， on 80 tracks on each side--Part1:Dimensional， physical and magnetic characteristics 信息处理 数据交换用90 mm改进调频制记录的位密度为15916 磁通翻转/弧度、每面80条磁道的软磁盘 第一部分:尺寸、物理性能和磁性能 |
China National Standards using |
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| GB/T 14979-1994 |
Eutectic carbide of steel--Micrographic method using standard diagrams 钢的共晶碳化物不均匀度评定法 |
China National Standards using |
English PDF |
| GB/T 14733.8-1993 |
Terminology for telecommunications--Telecommunications using telephone 电信术语 电话 |
China National Standards using |
English PDF |
| GB/T 14733.5-1993 |
Terminology fortelecommunications--Telecommunications using discrete signals， telegraphy， facsimile and data communication 电信术语 使用离散信号的电信方式、电报、传真和数据通信 |
China National Standards using |
English PDF |
| GB/T 14398-1993 |
Data communication--Arrangements for DTE to DTE physical connection using V.24 and X.24 interchange circuits 数据通信 使用V.24和X.24互换电路的DTE到DTE物理连接的接法 |
China National Standards using |
English PDF |
| GB/T 275-1993 |
Shaft and housing fits for rolling bearings 滚动轴承与轴和外壳的配合 |
China National Standards using |
English PDF |
| GB/T 14006-1992 |
Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment--Part 1:Transformers and inductors using YEI-1 laminations 通信和电子设备用变压器和电感器外形尺寸 第一部分:采用 YEI-1铁心片的变压器和电感器 |
China National Standards using |
English PDF |
| GB/T 13302-1991 |
Steel--Determination of area content of graphite-micrographic method using diagrams 钢中石墨碳显微评定方法 |
China National Standards using |
English PDF |
| GB/T 13242-1991 |
Iron ores--Low-temperature disintegration test--Method using cold tumbling after static reduction 铁矿石 低温粉化试验 静态还原后使用冷转鼓的方法 |
China National Standards using |
English PDF |
| GB/T 12985-1991 |
General rules of using percentiles of the body dimensions for products design 在产品设计中应用人体尺寸百分位数的通则 |
China National Standards using |
English PDF |
| GB/T 12635-1990 |
Ceramic base body using in carbon film resistor 碳膜电阻器用陶瓷基体 |
China National Standards using |
English PDF |
| GB/T 12449-1990 |
Interface for using dedicated interconnections between sound and television broadcasting transmitting equipment and supervisory equipment 以专用连接线方式互连的声音和电视广播发射设备与监控设备之间的接口 |
China National Standards using |
English PDF |
| GB/T 11898-1989 |
Water quality--Determination of free chlorine and total chlorine--Spectrophotometric method using N，N-diethyl-1，4-phenylenediamine 水质 游离氯和总氯的测定 N，N-二乙基-1，4-苯二胺分光光度法 |
China National Standards using |
English PDF |
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