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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 13917.10-2009 |
Laboratory efficacy test methods and criterions of public health insecticides for pesticide registration - Part 10: Analogous site 农药登记用卫生杀虫剂室内药效试验及评价 第10部分：模拟现场 |
China National Standards ratio |
 English PDF |
| GB/T 23443-2009 |
Aluminium panels for building decoration 建筑装饰用铝单板 |
China National Standards ratio |
English PDF |
| GB/T 14208.1-2009 |
Textile-glass-reinforced plastics - Determination of mechanical properties on rods made of roving-reinforced resin - Part 1: General considerations and preparation of rods 纺织玻璃纤维增强塑料 无捻粗纱增强树脂棒机械性能的测定 第1部分：通则和棒的制备 |
China National Standards ratio |
English PDF |
| GB/T 12543-2009 |
Acceleration performance test method for motor vehicles 汽车加速性能试验方法 |
China National Standards ratio |
English PDF |
| GB/T 23369-2009 |
Standard test method for determination of magnetic saturation (MS) of cemented carbides 硬质合金磁饱和（MS）测定的标准试验方法 |
China National Standards ratio |
English PDF |
| GB/T 23367.1-2009 |
Methods for chemical analysis of lithium cobalt oxide - Part 1: Determination of cobalt content - EDTA titration 钴酸锂化学分析方法 第1部分：钴量的测定 EDTA滴定法 |
China National Standards ratio |
English PDF |
| GB/T 23366-2009 |
Electrochemical performance test of lithium cobalt oxide - Test method for discharge plateau capacity ratio and cycle life 钴酸锂电化学性能测试 放电平台容量比率及循环寿命测试方法 |
China National Standards ratio |
English PDF |
| GB/T 17363.2-2009 |
Nondestructive mensuration of gold content in the gold products - Part 2: Method of compositive determine 黄金制品金含量无损测定方法 第2部分：综合测定方法 |
China National Standards ratio |
English PDF |
| GB/T 17363.1-2009 |
Nondestructive mensuration of gold content in the gold products - Part 1: Method of electron probe microanalysis 黄金制品金含量无损测定方法 第1部分：电子探针微分析法 |
China National Standards ratio |
English PDF |
| GB/T 21412.6-2009 |
Petroleum and natural gas industries - Design and operation of subsea production systems - Part 6: Subsea production control systems 石油天然气工业 水下生产系统的设计与操作 第6部分：水下生产控制系统 |
China National Standards ratio |
English PDF |
| GB/T 21412.3-2009 |
Petroleum and natural gas industries - Design and operation of subsea production systems - Part 3: Through flowline (TFL) systems 石油天然气工业 水下生产系统的设计与操作 第3部分：过出油管（TFL）系统 |
China National Standards ratio |
English PDF |
| GB/T 11146-2009 |
Crude petroleum - Determination of water - Coulometric Karl Fischer titration method 原油水含量测定 卡尔?费休库仑滴定法 |
China National Standards ratio |
English PDF |
| GB/T 23249-2009 |
Coalbed gas content measurement methods in geological exploration period 地勘时期煤层瓦斯含量测定方法 |
China National Standards ratio |
English PDF |
| GB/T 18420.2-2009 |
Biological toxicity for pollutants from marine petroleum exploration and exploitation - Part 2: Test method 海洋石油勘探开发污染物生物毒性 第2部分：检验方法 |
China National Standards ratio |
English PDF |
| GB/T 18292-2009 |
Economical operation of domestic boilers 生活锅炉经济运行 |
China National Standards ratio |
English PDF |
| GB 18420.1-2009 |
Biological toxicity for pollutants from marine petroleum exploration and exploitation - Part 1: Grading 海洋石油勘探开发污染物生物毒性 第1部分：分级 |
China National Standards ratio |
English PDF |
| GB/T 8923.3-2009 |
Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 3: Preparation grades of welds,edges and other areas with surface imperfections 涂覆涂料前钢材表面处理 表面清洁度的目视评定 第3部分：焊缝、边缘和其他区域的表面缺陷的处理等级 |
China National Standards ratio |
English PDF |
| GB/T 6383-2009 |
The method of vibration cavitation erosion test 振动空蚀试验方法 |
China National Standards ratio |
English PDF |
| GB/T 18570.2-2009 |
Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 2: Laboratory determination of chloride on cleaned surfaces 涂覆涂料前钢材表面处理 表面清洁度的评定试验 第2部分：清理过的表面上氯化物的实验室测定 |
China National Standards ratio |
English PDF |
| GB/T 18570.11-2009 |
Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 11: Field method for the turbidimetric determination of water-soluble sulfate 涂覆涂料前钢材表面处理 表面清洁度的评定试验 第11部分：水溶性硫酸盐的现场浊度测定法 |
China National Standards ratio |
English PDF |
| GB/T 16305-2009 |
Torsional vibration absorbers 扭转振动减振器 |
China National Standards ratio |
English PDF |
| GB/T 13288.5-2009 |
Preparation of steel substrates before application of paints and related products - Surface roughness characteristics of blast-cleaned steel substrates - Part 5: Replica tape method for the determination of the surface profile 涂覆涂料前钢材表面处理 喷射清理后的钢材表面粗糙度特性 第5部分：表面粗糙度的测定方法 复制带法 |
China National Standards ratio |
English PDF |
| GB/T 13288.3-2009 |
Preparation of steel substrates before application of paints and related products - Surface roughness characteristics of blast-cleaned steel substrates - Part 3: Method for the calibration of ISO surface profile comparators and for the determination of su 涂覆涂料前钢材表面处理 喷射清理后的钢材表面粗糙度特性 第3部分：ISO表面粗糙度比较样块的校准和表面粗糙度的测定方法 显微镜调焦法 |
China National Standards ratio |
English PDF |
| GB/T 11700-2009 |
Small craft - Marine propulsion reciprocating internal combustion engines - Power measurements and declarations 小艇 船用推进往复式内燃机 功率的测定和标定 |
China National Standards ratio |
English PDF |
| GB 8275-2009 |
Food additive - Alpha-amylase preparation 食品添加剂 α-淀粉酶制剂 |
China National Standards ratio |
English PDF |
| GB/T 23278.6-2009 |
Methods for chemical analysis of sodium stannate - Part 6: Determination of free alkali content - Titration 锡酸钠化学分析方法 第6部分：游离碱的测定 中和滴定法 |
China National Standards ratio |
English PDF |
| GB/T 23278.1-2009 |
Methods for chemical analysis of sodium stannate - Part 1: Determination of tin content - Titration 锡酸钠化学分析方法 第1部分：锡量的测定 碘酸钾滴定法 |
China National Standards ratio |
English PDF |
| GB/T 23273.3-2009 |
Methods for chemical analysis of cobalt oxatate - Part 3: Determination of arsenic content - Hydride generation-atomic fluorescence spectrometry 草酸钴化学分析方法 第3部分：砷量的测定 氢化物发生-原子荧光光谱法 |
China National Standards ratio |
English PDF |
| GB/T 23273.1-2009 |
Methods for chemical analysis of cobalt oxalate - Part 1: Determination of cobalt content - Potentiometric titration method 草酸钴化学分析方法 第1部分：钴量的测定 电位滴定法 |
China National Standards ratio |
English PDF |
| GB 4706.92-2008 |
Household and similar electrical appliances - Safety - Particular requirements for appliances to recover refrigerant from air conditioning and refrigeration equipment 家用和类似用途电器的安全 从空调和制冷设备中回收制冷剂的器具的特殊要求 |
China National Standards ratio |
English PDF |
| GB 10963.2-2008 |
Circuit-breakers for overcurrent protection for household and similar installation - Part 2: Circuit-breakers for a.c. and d.c.operation 家用及类似场所用过电流保护断路器 第2部分：用于交流和直流的断路器 |
China National Standards ratio |
English PDF |
| GB/T 5170.21-2008 |
Inspection methods for basic parameters of environmental testing equipments - Hydraulic vibrating type machines for vibration(random) test 电工电子产品环境试验设备基本参数检验方法 振动(随机)试验用液压振动台 |
China National Standards ratio |
English PDF |
| GB/T 4797.7-2008 |
Classification of environmental conditions - Environmental conditions of nature - Earthquake vibration and shock 电工电子产品环境条件分类 自然环境条件 地震振动和冲击 |
China National Standards ratio |
English PDF |
| GB/T 2423.59-2008 |
Environmental testing - Part 2: Test methods - Test Z/ABMFh: Combined temperature(cold and heat)/low air pressure/vibration（random） 电工电子产品环境试验 第2部分：试验方法 试验Z/ABMFh：温度（低温、高温）/低气压/振动（随机）综合 |
China National Standards ratio |
English PDF |
| GB/T 5169.28-2008 |
Fire hazard testing for electric and electronic products - Part 28: Smoke obscuration - Small-scale static test - Materials 电工电子产品着火危险试验 第28部分：烟模糊 小规模静态试验方法 材料 |
China National Standards ratio |
English PDF |
| GB/T 5169.27-2008 |
Fire hazard testing for electric and electronic products - Part 27: Smoke obscuration - Small-scale static test - Description of the apparatus 电工电子产品着火危险试验 第27部分：烟模糊 小规模静态试验方法 仪器说明 |
China National Standards ratio |
English PDF |
| GB/T 5169.26-2008 |
Fire hazard testing for electric and electronic products - Part 26: Smoke obscuration - Summary and relevance of test methods 电工电子产品着火危险试验 第26部分：烟模糊 试验方法概要和相关性 |
China National Standards ratio |
English PDF |
| GB/T 5169.25-2008 |
Fire hazard testing for electric and electronic products - Part 25: Smoke obscuration - General guidance 电工电子产品着火危险试验 第25部分：烟模糊 总则 |
China National Standards ratio |
English PDF |
| GB/T 2424.26-2008 |
Environmental testing - Supporting documentation and guidance - Selecting amongst vibration tests 电工电子产品环境试验 第3部分：支持文件和导则 振动试验选择 |
China National Standards ratio |
English PDF |
| GB/T 22665.6-2008 |
Measurement of vibrations at the handle of hand-held electric tools - Part 6: Hammers 手持式电动工具手柄的振动测量方法 第6部分：锤类工具 |
China National Standards ratio |
English PDF |
| GB/T 22665.5-2008 |
Measurement of vibrations at the handle of hand-held electric tools - Part 5: Circular saws 手持式电动工具手柄的振动测量方法 第5部分：圆锯 |
China National Standards ratio |
English PDF |
| GB/T 22665.4-2008 |
Measurement of vibrations at the handle of hand-held electric tools - Part 4: Sanders and polishers other than disk type 手持式电动工具手柄的振动测量方法 第4部分：非盘式砂光机和抛光机 |
China National Standards ratio |
English PDF |
| GB/T 22665.3-2008 |
Measurement of vibrations at the handle of hand-held electric tools - Part 3: Grinders, polishers and disk-type sanders 手持式电动工具手柄的振动测量方法 第3部分：砂轮机、抛光机和盘式砂光机 |
China National Standards ratio |
English PDF |
| GB/T 22665.2-2008 |
Measurement of vibrations at the handle of hand-held electric tools - Part 2: Screwdrivers and impact wrenches 手持式电动工具手柄的振动测量方法 第2部分：螺丝刀和冲击扳手 |
China National Standards ratio |
English PDF |
| GB/T 22665.1-2008 |
Measurement of vibrations at the handle of hand-held electric tools - Part 1: Drills and impact drills 手持式电动工具手柄的振动测量方法 第1部分：电钻和冲击钻 |
China National Standards ratio |
English PDF |
| GB/T 3903.42-2008 |
Footwear - Test methods for uppers, lining and insocks - Colour migration 鞋类 帮面、衬里和内垫试验方法 颜色迁移性 |
China National Standards ratio |
English PDF |
| GB/T 22897-2008 |
Paper and board - Determination of resistance to water penetration 纸和纸板 抗透水性的测定 |
China National Standards ratio |
English PDF |
| GB/T 22876-2008 |
Paper，board and corrugated fiberboard - Description and calibration of compression testing equipment 纸、纸板和瓦楞纸板 压缩试验仪的描述和校准 |
China National Standards ratio |
English PDF |
| GB/T 22811-2008 |
Corrugated fibreboard - Determination of the grammage of the component papers after separation 瓦楞纸板 分离后组成原纸定量的测定 |
China National Standards ratio |
English PDF |
| GB/T 14625.4-2008 |
Test methods for basketball, football, volleyball and handball - Part 4: Test conditions and sample preparation 篮球、足球、排球、手球试验方法 第4部分：试验条件与试样准备 |
China National Standards ratio |
English PDF |
| GB/T 8323.2-2008 |
Plastic - Smoke generation - Part 2: Determination of optical density by a single-chamber test 塑料 烟生成 第2部分：单室法测定烟密度试验方法 |
China National Standards ratio |
English PDF |
| GB/T 8323.1-2008 |
Plastic - Smoke generation - Part 1: Guidance on optical-density testing 塑料 烟生成 第1部分：烟密度试验方法导则 |
China National Standards ratio |
English PDF |
| GB/T 22661.3-2008 |
Chemical analysis methods of potassium fluoborade - Part 3: Determination of potassium fluoborade content - Distillation-sodium hydrogen oxidizes titration volumetric method 氟硼酸钾化学分析方法 第3部分：氟硼酸钾含量的测定 氢氧化钠容量法 |
China National Standards ratio |
English PDF |
| GB/T 22661.1-2008 |
Chemical analysis methods of potassium fluoborade - Part 1: preparation and storage of test samples 氟硼酸钾化学分析方法 第1部分：试样的制备和贮存 |
China National Standards ratio |
English PDF |
| GB/T 22660.3-2008 |
Chemical analysis methods of lithium fluoride - Part 3: Determination of fluoride content - Distillation-thorium nitrate titration volumetric method 氟化锂化学分析方法 第3部分：氟含量的测定 蒸馏－硝酸钍容量法 |
China National Standards ratio |
English PDF |
| GB/T 22660.1-2008 |
Chemical analysis methods of lithium fluoride - Part 1: Preparation and storage of test samples 氟化锂化学分析方法 第1部分：试样的制备和贮存 |
China National Standards ratio |
English PDF |
| GB/T 22662.8-2008 |
Chemical analysis methods of potassium fluotitanate - Part 8: Determination of chloride content - Distillation-mercury nitration volumetric method 氟钛酸钾化学分析方法 第8部分：氯含量的测定 硝酸汞容量法 |
China National Standards ratio |
English PDF |
| GB/T 22662.3-2008 |
Chemical analysis methods of potassium fluotitanate - Part 3: Determination of potassium fluotitanate content - By ammonium iron sulphate dodecahydrate titration volumetric method 氟钛酸钾化学分析方法 第3部分：氟钛酸钾含量的测定 硫酸高铁铵容量法 |
China National Standards ratio |
English PDF |
| GB/T 22662.1-2008 |
Chemical analysis methods of potassium fluotitanate - Part 1: Preparation and storage of test samples 氟钛酸钾化学分析方法 第1部分：试样的制备和贮存 |
China National Standards ratio |
English PDF |
| GB/T 22661.9-2008 |
Chemical analysis methods of potassium fluoborade - Part 9: Determination of chloride content - Distillation mercury nitration volumetric method 氟硼酸钾化学分析方法 第9部分：氯含量的测定 硝酸汞容量法 |
China National Standards ratio |
English PDF |
| GB/T 22661.8-2008 |
Chemical analysis methods of potassium fluoborade - Part 8: Determination of free borade content - Distillation-sodium hydrogen oxidizes titration volumetric method 氟硼酸钾化学分析方法 第8部分：游离硼酸含量的测定 氢氧化钠容量法 |
China National Standards ratio |
English PDF |
| GB 8877-2008 |
Safety requirements for the installation，operation and maintenance of household and similar electrical appliances 家用和类似用途电器安装、使用、维修安全要求 |
China National Standards ratio |
English PDF |
| GB/T 22587-2008 |
Superconductivity - Matrix to superconductor volume ratio measurement - Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors 基体与超导体体积比测量 Cu/Nb-Ti复合超导体铜-超[体积]比的测量 |
China National Standards ratio |
English PDF |
| GB/T 22571-2008 |
Surface chemical analysis ?X-ray photoelectron spectrometers ?Calibration of energy scales 表面化学分析 X射线光电子能谱仪 能量标尺的校准 |
China National Standards ratio |
English PDF |
| GB/T 22564-2008 |
Fluorspar - Sampling and sample preparation 萤石 取样和制样 |
China National Standards ratio |
English PDF |
| GB/T 1997-2008 |
Coke-sampling and preparation of samples 焦炭试样的采取和制备 |
China National Standards ratio |
English PDF |
| GB/T 10283-2008 |
Forestry machinery - Portable pneumatic fire extinguisher - Measurement of vibration at the handles 林业机械 便携式风力灭火机 手把振动的测定 |
China National Standards ratio |
English PDF |
| GB 474-2008 |
Method for preparation of coal sample 煤样的制备方法 |
China National Standards ratio |
English PDF |
| GB 50463-2008 |
Code for design of vibration isolation 隔振设计规范 |
China National Standards ratio |
English PDF |
| GB/T 9969-2008 |
General principles for preparation of instructions for use of industrial products 工业产品使用说明书 总则 |
China National Standards ratio |
English PDF |
| GB/T 22510-2008 |
Cereals, pulses and by-products - Determination of ash yield by incineration 谷物、豆类及副产品 灰分含量的测定 |
China National Standards ratio |
English PDF |
| GB/T 17376-2008 |
Animal and vegetable fats and oils - Preparation of methyl esters of fatty acids 动植物油脂 脂肪酸甲酯制备 |
China National Standards ratio |
English PDF |
| GB/T 15687-2008 |
Animal and vegetable fats and oils - Preparation of test sample 动植物油脂 试样的制备 |
China National Standards ratio |
English PDF |
| GB 4914-2008 |
Effluent limitations for pollutants from offshore petroleum exploration and production 海洋石油勘探开发污染物排放浓度限值 |
China National Standards ratio |
English PDF |
| GB/T 22412-2008 |
Aluminium-plastic composite panel for ordinary decoration 普通装饰用铝塑复合板 |
China National Standards ratio |
English PDF |
| GB/T 22419-2008 |
Industrial trucks - Specification for indicator lights for container handling and grappler arm operations 工业车辆 集装箱吊具和抓臂操作用指示灯技术要求 |
China National Standards ratio |
English PDF |
| GB/T 22454-2008 |
Enterprise integration - Constructs for enterprise modeling 企业集成 企业建模构件 |
China National Standards ratio |
English PDF |
| GB/T 19903.121-2008 |
Industrial automation systems and integration - Physical device control - Data model for computerized numerical controllers - Part 121: Tools for turning machines 工业自动化系统与集成 物理设备控制 计算机数值控制器用的数据模型 第121部分：车床用刀具 |
China National Standards ratio |
English PDF |
| GB/T 18975.2-2008 |
Industrial automation systems and integration - Integration of life-cycle data for process plants including oil and gas production facilities - Part 2: Data model 工业自动化系统与集成 流程工厂(包括石油和天然气生产设施)生命周期数据集成 第2部分：数据模型 |
China National Standards ratio |
English PDF |
| GB/T 17645.25-2008 |
Industrial automation systems and integration - Parts library - Part 25: Logical resources: Logical model of supplier library with aggregate values and explicit content 工业自动化系统与集成 零件库 第25部分：逻辑资源：带聚合值和显式内容的供应商库逻辑模型 |
China National Standards ratio |
English PDF |
| GB/T 17645.102-2008 |
Industrial automation systems and integration - Parts library - Part 102: View exchange protocol by ISO 10303 conforming specification 工业自动化系统与集成 零件库 第102部分：符合GB/T 16656一致性规范的视图交换协议 |
China National Standards ratio |
English PDF |
| GB/T 17645.101-2008 |
Industrial automation systems and integration - Parts library - Part 101: Geometrical view exchange protocol by parametric program 工业自动化系统与集成 零件库 第101部分：参数化程序的几何视图交换协议 |
China National Standards ratio |
English PDF |
| GB/T 16656.47-2008 |
Industrial automation systems and integration - Product data representation and exchange - Part 47: Iintergrated generic resources: Shape variation tolerances 工业自动化系统与集成 产品数据表达与交换 第47部分：集成通用资源：形状变化公差 |
China National Standards ratio |
English PDF |
| GB/T 16656.44-2008 |
Industrial automation systems and integration - Product data representation and exchange - Part 44: Integrated generic resources: Product structure configuration 工业自动化系统与集成 产品数据表达与交换 第44部分：集成通用资源：产品结构配置 |
China National Standards ratio |
English PDF |
| GB/T 16656.43-2008 |
Industrial automation systems and integration - Product data representation and exchange - Part 43: Integrated generic resource: Representation structures 工业自动化系统与集成 产品数据表达与交换 第43部分：集成通用资源：表达结构 |
China National Standards ratio |
English PDF |
| GB/T 16642-2008 |
Enterprise integration - Framework for enterprise modelling 企业集成 企业建模框架 |
China National Standards ratio |
English PDF |
| GB/T 6444-2008 |
Mechanical vibration - Balancing vocabulary 机械振动 平衡词汇 |
China National Standards ratio |
English PDF |
| GB/T 14125-2008 |
Mechanical vibration and shock - Measurement and evaluation of shock and vibration effects on sensitive equipment in buildings 机械振动与冲击 振动与冲击对建筑物内敏感设备影响的测量和评价 |
China National Standards ratio |
English PDF |
| GB/T 13823.20-2008 |
Methods for the calibration of vibration and shock pick-ups - Accelerometer resonance testing - General methods 振动与冲击传感器校准方法 加速度计谐振测试 通用方法 |
China National Standards ratio |
English PDF |
| GB/T 13823.19-2008 |
Methods for the calibration of vibration and shock pick-ups - Calibration by Earth’s gravitation 振动与冲击传感器的校准方法 地球重力法校准 |
China National Standards ratio |
English PDF |
| GB/T 13441.2-2008 |
Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration - Part 2: Vibration in buildings(1Hz to 80Hz) 机械振动与冲击 人体暴露于全身振动的评价 第2部分：建筑物内的振动（1Hz～80Hz） |
China National Standards ratio |
English PDF |
| GB/T 13436-2008 |
Technical requirements for torsional vibration measuring instrument 扭转振动测量仪器技术要求 |
China National Standards ratio |
English PDF |
| GB/T 11348.5-2008 |
Mechanical vibration evaluation of machine vibration by measurements on rotating shafts - Part 5: Machine sets in hydraulic power generating and pumping plants 旋转机械转轴径向振动的测量和评定 第5部分：水力发电厂和泵站机组 |
China National Standards ratio |
English PDF |
| GB/T 10408.8-2008 |
Vibration intrusion detector 振动入侵探测器 |
China National Standards ratio |
English PDF |
| GB/T 50452-2008 |
Technical specifications for protection of historic buildings against man-made vibration 古建筑防工业振动技术规范 |
China National Standards ratio |
English PDF |
| GB/T 16640-2008 |
Standard guide for selection and calibration of dosimetry systems for radiation processing 辐射加工剂量测量系统的选择和校准导则 |
China National Standards ratio |
English PDF |
| GB/T 16510-2008 |
The requirements for the competence of a radiation processing dosimetry calibration laboratory 辐射加工剂量学校准实验室的能力要求 |
China National Standards ratio |
English PDF |
| GB 15146.2-2008 |
Nuclear criticality safety for fissile materials outside reactors - Part 2: Basic technical practices and subcritical limits for handling, processing and operations with fissile materials 反应堆外易裂变材料的核临界安全 第2部分：易裂变材料操作、加工、处理的基本技术规则与次临界限值 |
China National Standards ratio |
English PDF |
| GB/T 12001.2-2008 |
Plastics - Unplasticized poly (vinyl chloride) (PVC-U) moulding and extruded materials - Part 2: Preparation of test specimens and determination of properties 塑料 未增塑聚氯乙烯模塑和挤出材料 第2部分：试样制备和性能测定 |
China National Standards ratio |
English PDF |
| GB/T 223.11-2008 |
Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method 钢铁及合金 铬含量的测定 可视滴定或电位滴定法 |
China National Standards ratio |
English PDF |
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