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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 26297.6-2010 |
Sampling of carBonaceous materials used for aluminium production - Part 6: Cokes for electrodes 铝用炭素材料取样方法 第6部分：煅后石油焦 |
China National Standards B |
 English PDF |
| GB/T 26297.5-2010 |
Sampling of carBonaceous materials used for aluminium production - Part 5: Pitch for electrodes 铝用炭素材料取样方法 第5部分：煤沥青 |
China National Standards B |
English PDF |
| GB/T 26297.4-2010 |
Sampling of carBonaceous materials used for aluminium production - Part 4: Cathodic pastes 铝用炭素材料取样方法 第4部分：阴极糊 |
China National Standards B |
English PDF |
| GB/T 26297.3-2010 |
Sampling of carBonaceous materials used for aluminium production - Part 3: Prebaked blocks 铝用炭素材料取样方法 第3部分：预焙阳极 |
China National Standards B |
English PDF |
| GB/T 26297.2-2010 |
Sampling of carBonaceous materials used for aluminium production - Part 2: Sidewall blocks 铝用炭素材料取样方法 第2部分：侧部炭块 |
China National Standards B |
English PDF |
| GB/T 18115.15-2010 |
Chemical analysis methods of rare earth impurities in rare earth metals and their oxides - Part 15: Lutetium - Determination of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terBium, dysprosium, holmium, erbium, thulium, ytte 稀土金属及其氧化物中稀土杂质化学分析方法 第15部分：镥中镧、铈、镨、钕、钐、铕、钆、铽、镝、钬、铒、铥、镱和钇量的测定 |
China National Standards B |
English PDF |
| GB/T 18115.14-2010 |
Chemical analysis methods of rare earth impurities in rare earth metals and their oxides - Part 14 : YtterBium - Determination of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, lu 稀土金属及其氧化物中稀土杂质化学分析方法 第14部分：镱中镧、铈、镨、钕、钐、铕、钆、铽、镝、钬、铒、铥、镥和钇量的测定 |
China National Standards B |
English PDF |
| GB/T 18115.13-2010 |
Chemical analysis methods of rare earth impurities in rare earth metals and their oxides - Part 13: Thulium - Determination of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terBium, dysprosium, holmium, erbium, ytterbium, lut 稀土金属及其氧化物中稀土杂质化学分析方法 第13部分：铥中镧、铈、镨、钕、钐、铕、钆、铽、镝、钬、铒、镱、镥和钇量的测定 |
China National Standards B |
English PDF |
| GB/T 18114.9-2010 |
Chemical analysis methods of rare earth concentrates - Part 9：Determination of phosphorus pentoxide content - Phosphorus-Bismuth-molybdenum blue spectrophotometry 稀土精矿化学分析方法 第9部分：五氧化二磷量的测定 磷铋钼蓝分光光度法 |
China National Standards B |
English PDF |
| GB/T 18114.4-2010 |
Chemical analysis methods of rare earth concentrates - Part 4：Determination of nioBium oxide, zirconium oxide and titanium oxide contents - Inductively coupled plasma atomic emission spectrometry 稀土精矿化学分析方法 第4部分：氧化铌、氧化锆、氧化钛量的测定 电感耦合等离子体发射光谱法 |
China National Standards B |
English PDF |
| GB/T 15678-2010 |
ErBium oxide 氧化铒 |
China National Standards B |
English PDF |
| GB/T 12967.7-2010 |
Test methods for anodic oxidation coatings of aluminium and aluminium alloys - Part 7：Measurement of aBrasion resistance of anodicoxidation coatings by sand falling test apparatus 铝及铝合金阳极氧化膜检测方法 第7部分：用落砂试验仪测定阳极氧化膜的耐磨性 |
China National Standards B |
English PDF |
| GB/T 12690.17-2010 |
Chemical analysis methods of non-rare earth impurities in rare earth metals and the oxides - Part 17：Determination of nioBium and tantalum contents of rare earth metals 稀土金属及其氧化物中非稀土杂质化学分析方法 第17部分：稀土金属中铌、钽量的测定 |
China National Standards B |
English PDF |
| GB/T 12689.7-2010 |
Methods for chemical analysis of zinc and zinc alloys - Part 7：Determination of magnesium content - Flame atomic aBsorption spectrometric method 锌及锌合金化学分析方法 第7部分： 镁量的测定 火焰原子吸收光谱法 |
China National Standards B |
English PDF |
| GB/T 12689.1-2010 |
Methods for chemical analysis of zinc and zinc alloys - Part 1: Determination of aluminum content - Chromazurol S-polyethylene glycol octyl phenylether-cetylpyridine Bromine spectrophotometry, Chromeazurol S spectrophotometric method and EDTA titrimetry 锌及锌合金化学分析方法 第1部分：铝量的测定 铬天青S-聚乙二醇辛基苯基醚-溴化十六烷基吡啶分光光度法、CAS分光光度法和EDTA滴定法 |
China National Standards B |
English PDF |
| GB/T 9123-2010 |
Steel pipe Blank flanges 钢制管法兰盖 |
China National Standards B |
English PDF |
| GB/T 9118-2010 |
Loose huBbed steel pipe flanges with welding neck collor 对焊环带颈松套钢制管法兰 |
China National Standards B |
English PDF |
| GB/T 9117-2010 |
HuBbed socket welding steel pipe flanges 带颈承插焊钢制管法兰 |
China National Standards B |
English PDF |
| GB/T 9116-2010 |
HuBbed slip-on-welding steel pipe flanges 带颈平焊钢制管法兰 |
China National Standards B |
English PDF |
| GB/T 9114-2010 |
HuBbed screwed steel pipe flanges 带颈螺纹钢制管法兰 |
China National Standards B |
English PDF |
| GB/T 6391-2010 |
Rolling Bearings - Dynamic load ratings and rating life 滚动轴承 额定动载荷和额定寿命 |
China National Standards B |
English PDF |
| GB/T 26147-2010 |
Specification for Ball of ball valve 球阀球体 技术条件 |
China National Standards B |
English PDF |
| GB/T 26146-2010 |
Eccentric stmi-Ball valve 偏心半球阀 |
China National Standards B |
English PDF |
| GB/T 26144-2010 |
Liner fluoroplatics for flanged ang wafer steel Butterfly valve 法兰和对夹连接钢制衬氟塑料蝶阀 |
China National Standards B |
English PDF |
| GB/T 26140-2010 |
Non-destructive testing - Standards test method for determining residual stresses By neutron diffraction 无损检测 测量残余应力的中子衍射方法 |
China National Standards B |
English PDF |
| GB/T 14041.3-2010 |
Hydraulic fluid power - Filter elements - Part 3：Verification of collapse/Burst pressure rating 液压滤芯 第3部分：抗压溃（破裂）特性检验方法 |
China National Standards B |
English PDF |
| GB 4706.58-2010 |
Household and similar electrical appliances - Safety - Particular requirements for water-Bed heaters 家用和类似用途电器的安全 水床加热器的特殊要求 |
China National Standards B |
English PDF |
| GB 4706.101-2010 |
Household and similar electrical appliances - Safety - Particular requirements for drives for rolling shutters，awnings, Blinds and similar equipment 家用和类似用途电器的安全 卷帘百叶门窗、遮阳篷、遮帘和类似设备的驱动装置的特殊要求 |
China National Standards B |
English PDF |
| GB 26172.1-2010 |
Foldaway Beds - Safety requirements and tests - Part 1：Safety requirements 折叠翻靠床 安全要求和试验方法 第1部分：安全要求 |
China National Standards B |
English PDF |
| GB 21551.6-2010 |
AntiBacterial and cleaning function for household and similar electrical appliances - Particular requirements of air conditioner 家用和类似用途电器的抗菌、除菌、净化功能 空调器的特殊要求 |
China National Standards B |
English PDF |
| GB 21551.5-2010 |
AntiBacterial and cleaning function for household and similar electrical appliances - Partilicular requirements for electric washing machine 家用和类似用途电器的抗菌、除菌、净化功能 洗衣机的特殊要求 |
China National Standards B |
English PDF |
| GB 21551.4-2010 |
AntiBacterial and cleaning function for household and similar electrical appliances - Particular requirements of refrigerator 家用和类似用途电器的抗菌、除菌、净化功能 电冰箱的特殊要求 |
China National Standards B |
English PDF |
| GB 21551.3-2010 |
AntiBacterial and cleaning function for household and similar electrical appliances - Particular requirements of air cleaner 家用和类似用途电器的抗菌、除菌、净化功能 空气净化器的特殊要求 |
China National Standards B |
English PDF |
| GB 21551.2-2010 |
AntiBacterial and cleaning function for household and similar electrical appliances - Particular requirements of material 家用和类似用途电器的抗菌、除菌、净化功能 抗菌材料的特殊要求 |
China National Standards B |
English PDF |
| GB/T 26443-2010 |
Safety colours and safety signs - Classification, performance and duraBility of safety signs 安全色和安全标志 安全标志的分类、性能和耐久性 |
China National Standards B |
English PDF |
| GB/T 24218.6-2010 |
Textiles - Test methods for nonwovens - Part 6：ABsorption 纺织品 非织造布试验方法 第6部分：吸收性的测定 |
China National Standards B |
English PDF |
| GB/T 24218.14-2010 |
Textiles - Test methods for nonwovens - Part 14：Coverstock WetBack 纺织品 非织造布试验方法 第14部分：包覆材料返湿量的测定 |
China National Standards B |
English PDF |
| GB/T 16902.4-2010 |
Rules for the presentation of graphical symBols for use on equipment - Part 4: Guidelines for the adaptation of graphical symbols for use on screens and displays(icons) 设备用图形符号表示规则 第4部分：屏幕和显示器用图形符号（图标）的设计指南 |
China National Standards B |
English PDF |
| GB/T 16273.7-2010 |
Graphical symBols for use on equipment - Part 7: Common symbols for dental equipment 设备用图形符号 第7部分：牙科设备通用符号 |
China National Standards B |
English PDF |
| GB/T 12703.6-2010 |
Textile - Evaluation for electrostatic properties - Part 6：FiBre resistance leak 纺织品 静电性能的评定 第6部分：纤维泄漏电阻 |
China National Standards B |
English PDF |
| GB/Z 26139-2010 |
Earth-moving machinery - Guidelines for assessment of exposure to whole-Body vibration of ride-on machines - Use of harmonized data measured by international institutes, organizations and manufacturers 土方机械 驾乘式机器暴露于全身振动的评价指南 国际协会、组织和制造商所测定协调数据的应用 |
China National Standards B |
English PDF |
| GB/Z 26138-2010 |
Printing machinery - Graphical symBols for printing press systems and finishing systems,including related auxiliary equipment 印刷机械 印刷机系统和印后系统以及相关辅助设备的图形符号 |
China National Standards B |
English PDF |
| GB/T 6936-2010 |
Breeding stock of Chinese northeast wapiti 东北马鹿种鹿 |
China National Standards B |
English PDF |
| GB/T 6935-2010 |
Breeding stock of Chinese sika-deer 中国梅花鹿种鹿 |
China National Standards B |
English PDF |
| GB/T 5703-2010 |
Basic human body measurements for technological design 用于技术设计的人体测量基础项目 |
China National Standards B |
English PDF |
| GB/T 4205-2010 |
Basic and safety principles for man-machine interface(MMI),marking and identification - Actuating principles 人机界面标志标识的基本和安全规则 操作规则 |
China National Standards B |
English PDF |
| GB/T 4026-2010 |
Basic and safety principles for man-machine interface,marking and identification - Identification of equipment terminals and conductor terminations 人机界面标志标识的基本和安全规则 设备端子和导体终端的标识 |
China National Standards B |
English PDF |
| GB/T 4025-2010 |
Basic and safety principles for man-machine interface,marking and identification - Coding principles for indicators and actuators 人机界面标志标识的基本和安全规则 指示器和操作器件的编码规则 |
China National Standards B |
English PDF |
| GB/T 26442-2010 |
Feed additive - Menadione Nicotinamide Bisulfite 饲料添加剂 亚硫酸氢烟酰胺甲萘醌 |
China National Standards B |
English PDF |
| GB/T 26438-2010 |
Feed efficacy and safety evaluation - Guidelines for the determination of apparent digestiBle energy for pigs by the total collection method 畜禽饲料有效性与安全性评价 全收粪法测定猪饲料表观消化能技术规程 |
China National Standards B |
English PDF |
| GB/T 26437-2010 |
Feed efficacy and safety evaluation - Guidelines for the determination of apparent metaBolizable energy for chickens by the force feeding method 畜禽饲料有效性与安全性评价 强饲法测定鸡饲料表观代谢能技术规程 |
China National Standards B |
English PDF |
| GB/T 26435-2010 |
Chinese mitten-handed craB - Brooders and larvae 中华绒螯蟹 亲蟹、苗种 |
China National Standards B |
English PDF |
| GB/T 26428-2010 |
Method for determination of Bacillus subtilis in feeds 饲用微生物制剂中枯草芽孢杆菌的检测 |
China National Standards B |
English PDF |
| GB/T 26427-2010 |
Method for determination of Bacillus cereus in feeds 饲料中蜡样芽孢杆菌的检测 |
China National Standards B |
English PDF |
| GB/T 26426-2010 |
Method for determination of ViBrio parahaemolyticus in feeds 饲料中副溶血性弧菌的检测 |
China National Standards B |
English PDF |
| GB/T 26215-2010 |
Capacitors of damping aBsorption circuit for HVDC transmission systems converters 高压直流输电系统换流阀阻尼吸收回路用电容器 |
China National Standards B |
English PDF |
| GB/T 26171-2010 |
Inspection methods for electric wires and caBles of special equipment 电线电缆专用设备检测方法 |
China National Standards B |
English PDF |
| GB/T 26170-2010 |
Electrical insulation systems - Short-time evaluation of comBined thermal and electrical stresses 电气绝缘系统 热、电综合应力快速评定 |
China National Standards B |
English PDF |
| GB/T 26166-2010 |
Wall Bushings for ±800kV DC power systems ±800kV直流系统用穿墙套管 |
China National Standards B |
English PDF |
| GB/T 26149-2010 |
TPM Sensor Module Based tire pressure monitoring systems for motor vehicles 基于胎压监测模块的汽车轮胎气压监测系统 |
China National Standards B |
English PDF |
| GB/T 26137-2010 |
Thermodynamic performance testing for Blast furnace gas energy recovery turbo-expander 高炉煤气能量回收透平膨胀机热力性能试验 |
China National Standards B |
English PDF |
| GB/T 27410-2010 |
Technical specification for laBoratories of testing hazardous substances in consumer products 消费类产品中有毒有害物质检测实验室技术规范 |
China National Standards B |
English PDF |
| GB/T 27409-2010 |
Application of proficiency testing in the medical laBoratory 医学实验室能力验证的应用 |
China National Standards B |
English PDF |
| GB/T 27408-2010 |
Quality control in laBoratories evaluating validity of non-standard test method practice for a linear relationship 实验室质量控制 非标准测试方法的有效性评价 线性关系 |
China National Standards B |
English PDF |
| GB/T 27407-2010 |
Quality control in laBoratories applying statistical quality assurance and control charting techniques to evaluate analytical measurement system performance 实验室质量控制 利用统计质量保证和控制图技术 评价分析测量系统的性能 |
China National Standards B |
English PDF |
| GB/T 25444.1-2010 |
MoBile and fixed offshore units - Electrical installations - Part 1: General requirements and conditions 移动式和固定式近海设施 电气装置 第1部分：一般要求和条件 |
China National Standards B |
English PDF |
| GB/T 23756.2-2010 |
Evaluation of electrical endurance of electrical insulation systems - Part 2: Evaluation procedures Based on extreme-value distributions 电气绝缘系统耐电寿命评定 第2部分：在极值分布基础上的评定程序 |
China National Standards B |
English PDF |
| GB/T 23702.2-2010 |
Ergonomics - Computer manikins and Body templates - Part 2: Verification of functions and validation of dimensions for computer manikin systems 人类工效学 计算机人体模型和人体模板 第2部分：计算机人体模型系统的功能检验和尺寸校验 |
China National Standards B |
English PDF |
| GB/T 20875.2-2010 |
Electrical insulating materials - Methods of test for the hydrolytic staBility - Part 2: Moulded thermosets 电气绝缘材料水解稳定性试验方法 第2部分：热固性模塑材料 |
China National Standards B |
English PDF |
| GB/T 16895.18-2010 |
Electrical installations of Buildings - Part 5-51: Selection and erection of electrical equipment - Common rules 建筑物电气装置 第5-51部分：电气设备的选择和安装 通用规则 |
China National Standards B |
English PDF |
| GB/T 16895.10-2010 |
Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturBances and electromagnetic disturbances 低压电气装置 第4-44部分：安全防护 电压骚扰和电磁骚扰防护 |
China National Standards B |
English PDF |
| GB/T 11026.6-2010 |
Electrical insulating materials - Thermal endurance properties - Part 6: Ageing ovens - Multi-chamBer ovens 电气绝缘材料 耐热性 第6部分：老化烘箱 多室烘箱 |
China National Standards B |
English PDF |
| GB/T 1001.2-2010 |
Insulators for overhead lines with a nominal voltage aBove 1000V - Part 2: Insulator strings and insulator sets for a.c.systems - Definitions, test methods and acceptance criteria 标准电压高于1000V的架空线路绝缘子 第2部分：交流系统用绝缘子串及绝缘子串组 定义、试验方法和接收准则 |
China National Standards B |
English PDF |
| GB 26448-2010 |
Transport of dangerous goods - Test methods and criteria relating to the sensitivity of ammonium nitrate emulsions, suspension or gels, intermediate for Blasting explosives(ANE) 危险货物运输 炸药中间体（ANE）的敏感性试验方法和判据 |
China National Standards B |
English PDF |
| GB 26447-2010 |
Transport of dangerous goods - Classification procedures,test methods relating to ammonium nitrate fertilizers capaBle of self-sustaining decomposition 危险货物运输 能够自持分解的硝酸铵化肥的分类程序、试验方法和判据 |
China National Standards B |
English PDF |
| GB 26446-2010 |
Transport of dangerous goods - Test methods and criteria relating to the explosive suBstance excluded 危险货物运输 排除物质爆炸性的试验方法和判据 |
China National Standards B |
English PDF |
| GB 26445-2010 |
Transport of dangerous goods - Test methods and criteria relating to article, packaged article or packaged suBstance for transport 危险货物运输 物品、包装物品或包装物质可运输性试验方法和判据 |
China National Standards B |
English PDF |
| GB 26444-2010 |
Transport of dangerous goods - Test methods and criteria relating to suBstances for transport 危险货物运输 物质可运输性试验方法和判据 |
China National Standards B |
English PDF |
| GB 19522-2010 |
Blood & breath alcohol concentration and examination for vehicle drivers 车辆驾驶人员血液、呼气酒精含量阈值与检验 |
China National Standards B |
English PDF |
| GB/T 26204-2010 |
Plaster liner Board 纸面石膏板护面纸板 |
China National Standards B |
English PDF |
| GB/T 26202-2010 |
Core-Board 纸管纸板 |
China National Standards B |
English PDF |
| GB/T 26199-2010 |
Medical packaging Base paper 医用包装原纸 |
China National Standards B |
English PDF |
| GB/T 26188-2010 |
Bleached straw pulp 漂白碱法麦草浆 |
China National Standards B |
English PDF |
| GB/Z 26338-2010 |
Health informatics - Application guide for countries and their suBdivision identifiers 健康信息学 国家及其行政区划标识符应用指南 |
China National Standards B |
English PDF |
| GB/Z 26337.1-2010 |
Supply chain management - Part 1：Overview and Basic principle 供应链管理 第1部分：综述与基本原理 |
China National Standards B |
English PDF |
| GB/Z 26213-2010 |
Calculations for interior lighting Basic method 室内照明计算基本方法 |
China National Standards B |
English PDF |
| GB/Z 26157.9-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2：ControlNet & EtherNet/IP specification - Part 9： Station management 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第9部分：站管理 |
China National Standards B |
English PDF |
| GB/Z 26157.8-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 8: Electronic data sheets 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第8部分：电子数据表 |
China National Standards B |
English PDF |
| GB/Z 26157.7-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 7: Device profiles 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第7部分：设备行规 |
China National Standards B |
English PDF |
| GB/Z 26157.6-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 6: Object model 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第6部分：对象模型 |
China National Standards B |
English PDF |
| GB/Z 26157.5-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2：ControlNet and EtherNet/IP specification - Part 5：Data management 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第5部分：数据管理 |
China National Standards B |
English PDF |
| GB/Z 26157.4-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 4: Network and transport layer 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第4部分：网络层及传输层 |
China National Standards B |
English PDF |
| GB/Z 26157.3-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 3: Data link layer 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第3部分：数据链路层 |
China National Standards B |
English PDF |
| GB/Z 26157.2-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 2: Physical Layer and Media 测量和控制数字数据通信 工业控制系统用现场总线 类型 2：ControlNet和EtherNet/IP规范 第2部分：物理层和介质 |
China National Standards B |
English PDF |
| GB/Z 26157.1-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 1: General description 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第1部分：一般描述 |
China National Standards B |
English PDF |
| GB/Z 26157.10-2010 |
Digital data communication for measurement and control - FieldBus for use in industrial control systems - Type 2: ControlNet and EtherNet/IP specification - Part 10: Object library 测量和控制数字数据通信 工业控制系统用现场总线 类型2：ControlNet和EtherNet/IP规范 第10部分：对象库 |
China National Standards B |
English PDF |
| GB/T 9238-2010 |
SymBols for balancing machines and associated instrumentation 平衡机及其仪器仪表用图形符号 |
China National Standards B |
English PDF |
| GB/T 4964-2010 |
Measurement of noise emitted By vessels on inland waterways and harbours 内河航道及港口内船舶辐射噪声的测量 |
China National Standards B |
English PDF |
| GB/T 26432-2010 |
Guidelines for storage and transportation technique of vegetaBles 新鲜蔬菜贮藏与运输准则 |
China National Standards B |
English PDF |
| GB/T 26430-2010 |
Fruits and vegetaBles - Morphological and structural terminology 水果和蔬菜 形态学和结构学术语 |
China National Standards B |
English PDF |
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