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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 17738.2-2013 |
Radio frequency and coaxial cable assemblies―Part 2: Sectional specification for flexible coaxial cable assemblies 射频同轴电缆组件 第2部分：柔软同轴电缆组件分规范 |
China National Standards Sect |
 English PDF |
| GB/T 17737.5-2013 |
Coaxial communication cables－Part 5：Sectional specification for CATV trunk and distribution cables 同轴通信电缆 第5部分：CATV用干线和配线电缆分规范 |
China National Standards Sect |
English PDF |
| GB/T 17737.4-2013 |
Coaxial communication cables—Part 4: Sectional specification for leaky cables 同轴通信电缆 第4部分：漏泄电缆分规范 |
China National Standards Sect |
English PDF |
| GB/T 11322.1-2013 |
Radio frequency cables―Part 0: Guide to the design of detail specifications―Section 1―Coaxial cables 射频电缆 第0部分：详细规范设计指南 第1篇 同轴电缆 |
China National Standards Sect |
English PDF |
| GB/T 11313.9-2013 |
Radio-frequency connectors―Part 9: Sectional specification for SMC series R.F. coaxial connectors 射频连接器 第9部分：SMC系列射频同轴连接器分规范 |
China National Standards Sect |
English PDF |
| GB/T 11313.24-2013 |
Radio frequency connectors―Part 24: Sectional specification-radio frequency coaxial connectors with screw coupling, typically for use in 75Ω cable networks (type F) 射频连接器 第24部分: 75Ω电缆分配系统用螺纹连接射频同轴连接器（F型）分规范 |
China National Standards Sect |
English PDF |
| GB/T 11313.19-2013 |
Radio-frequency connectors―Part 19: Sectional specification-radio frequency coaxial connectors of type SSMB 射频连接器 第19部分：SSMB型射频同轴连接器分规范 |
China National Standards Sect |
English PDF |
| GB/T 11313.18-2013 |
Radio-frequency connectors—Part 18：Sectional specification-Radio frequency coaxial connectors of type SSMA 射频连接器 第18部分：SSMA系列射频同轴连接器分规范 |
China National Standards Sect |
English PDF |
| GB/T 29776-2013 |
Textiles - Determination of resistance to certain inSect pests 纺织品 防虫蛀性能的测定 |
China National Standards Sect |
English PDF |
| GB/T 29762-2013 |
Carbon fibre - Determination of filament diameter and cross-Section area 碳纤维 纤维直径和横截面积的测定 |
China National Standards Sect |
English PDF |
| GB/T 29567-2013 |
The bioassay method for flies’ resistance to inSecticides - Topical application method 蝇类对杀虫剂抗药性的生物学测定方法 微量点滴法 |
China National Standards Sect |
English PDF |
| GB/T 29566-2013 |
The bioassay methods for mosquitoes’ resistance to inSecticides 蚊类对杀虫剂抗药性的生物学测定方法 |
China National Standards Sect |
English PDF |
| GB/T 12796.2-2012 |
Permanent ferrite magnets - Part 2: Sectional specification for permanent ferrite magnets for use in micromotors 永磁铁氧体磁体 第2部分：微电机用永磁铁氧体磁体分规范 |
China National Standards Sect |
English PDF |
| GB/T 11313.10-2012 |
Radio-frequency connectors - Part 10：Sectional specification - SMB series R.F. coaxial connectors 射频连接器 第10部分：SMB系列射频同轴连接器分规范 |
China National Standards Sect |
English PDF |
| GB/T 14860.4-2012 |
Transformers and inductors for use in electronic and telecommunication equipment - Part 4: Sectional specification for power transformers for switched mode power supplies (SMPS) on the basis of the capability approval procedure 电子和通信设备用变压器和电感器 第4部分：按能力批准程序评定质量的开关电源变压器分规范 |
China National Standards Sect |
English PDF |
| GB/T 14860.3-2012 |
Transformers and inductors for use in electronic and telecommunication equipment - Part 3：Sectional specification for power transformers on the basis of the capability approval procedure 电子和通信设备用变压器和电感器 第3部分：按能力批准程序评定质量的电源变压器分规范 |
China National Standards Sect |
English PDF |
| GB/T 16608.50-2012 |
Electromechanical all-or-nothing relays - Part 50: Sectional specification - Electromechanical all-or-nothing telecom relays of assessed quality 有或无机电继电器 第50部分：分规范 电信用有质量评定的有或无机电继电器 |
China National Standards Sect |
English PDF |
| GB/T 12859.2-2012 |
Piezoelectric ceramic resonators - A specification in the IEC quality assessment System for electronic components (IECQ) - Part 2: Sectional specification-Qualification approval 电子元器件质量评定体系规范 压电陶瓷谐振器 第2部分：分规范- 鉴定批准 |
China National Standards Sect |
English PDF |
| GB/T 10190-2012 |
Fixed capacitors for use in electronic equipment - Part 16: Sectional specification：Fixed metallized polypropylene film dielectric d.c.capacitors 电子设备用固定电容器 第16部分: 分规范 金属化聚丙烯膜介质直流固定电容器 |
China National Standards Sect |
English PDF |
| GB/T 10185-2012 |
Fixed capacitors for use in electric equipment - Part 7: Sectional specification Fixed polystyrene film dielectric metal foil d.c. capacitors 电子设备用固定电容器 第7部分：分规范 金属箔式聚苯乙烯膜介质直流固定电容器 |
China National Standards Sect |
English PDF |
| GB/T 28414-2012 |
Structural Section steels with improved seismie resistance 抗震结构用型钢 |
China National Standards Sect |
English PDF |
| GB/T 28617-2012 |
General guidance for green manufacturing technology - Foundry Section 绿色制造通用技术导则 铸造 |
China National Standards Sect |
English PDF |
| GB/T 7424.5-2012 |
Optical fibre cables - Part 5: Sectional specification - Micro-duct optical fibre cables and fibre units for installation by blowing 光缆 第5部分：分规范 用于气吹安装的微型光缆和光纤单元 |
China National Standards Sect |
English PDF |
| GB/T 7332-2011 |
Fixed capacitors for use in electronic equipment - Part 2: Sectional specification - Fixed metallized polyethylene-terephthalate film dielectric d.c.capacitors 电子设备用固定电容器 第2部分：分规范 金属化聚乙烯对苯二甲酸酯膜介质直流固定电容器 |
China National Standards Sect |
English PDF |
| GB/T 5968-2011 |
Fixed capacitors for use in electronic equipment - Part 9: Sectional specification:Fixed capacitors of ceramic dielectric,Class 2 电子设备用固定电容器 第9部分：分规范 2类瓷介固定电容器 |
China National Standards Sect |
English PDF |
| GB/T 5966-2011 |
Fixed capacitors for use in electronic equipment - Part 8: Sectional specification: Fixed capacitors of ceramic dielectric,Class 1 电子设备用固定电容器 第8部分：分规范 1类瓷介固定电容器 |
China National Standards Sect |
English PDF |
| GB/T 27784-2011 |
Field efficacy test methods and criterions of public health inSecticides - General principles 卫生杀虫剂现场药效测定及评价 总则 |
China National Standards Sect |
English PDF |
| GB/T 27783-2011 |
Field efficacy test methods and criterions of public health inSecticides - Cockroach bait 卫生杀虫剂现场药效测定及评价 杀蟑毒（胶）饵 |
China National Standards Sect |
English PDF |
| GB/T 27782-2011 |
Field efficacy test methods and criterions of public health inSecticides - Aerosol 卫生杀虫剂现场药效测定及评价 气雾剂 |
China National Standards Sect |
English PDF |
| GB/T 27781-2011 |
Field efficacy test methods and criterions of public health inSecticides - Spray fluid 卫生杀虫剂现场药效测定及评价 喷射剂 |
China National Standards Sect |
English PDF |
| GB/T 27779-2011 |
Standards for safety application of public health inSecticides - Pyrethroid insecticides 卫生杀虫剂安全使用准则 拟除虫菊酯类 |
China National Standards Sect |
English PDF |
| GB/T 28015-2011 |
Domestic sanitary inSecticide - Test method of smoke dust 家用卫生杀虫用品 烟尘量试验方法 |
China National Standards Sect |
English PDF |
| GB/T 28006-2011 |
Domestic sanitary inSecticide - Odor grade 家用卫生杀虫用品 气味等级 |
China National Standards Sect |
English PDF |
| GB/T 26720-2011 |
General principles of stipulating the guidelines for cleaner production audit in service Sectors 服务业清洁生产审核指南编制通则 |
China National Standards Sect |
English PDF |
| GB/T 26420-2010 |
Disinfestation technical rules of forest quarantine pest inSect 林业检疫性害虫除害处理技术规程 |
China National Standards Sect |
English PDF |
| GB/T 26352-2010 |
Test methods of cockroach resistance to inSecticides - The bioassay methods for Blattella germanica 蜚蠊抗药性检测方法 德国小蠊生物测定法 |
China National Standards Sect |
English PDF |
| GB/T 26351-2010 |
Test methods of cockroach resistance to inSecticides - Test methods of insensitive acetylcholinesterase for Blattella germanica 蜚蠊抗药性检测方法 德国小蠊不敏感乙酰胆碱酯酶法 |
China National Standards Sect |
English PDF |
| GB/T 26350-2010 |
Test methods of fly resistance to inSecticides - The bioassay methods for Musca domestica 蝇类抗药性检测方法 家蝇生物测定法 |
China National Standards Sect |
English PDF |
| GB/T 26349-2010 |
Test methods of fly resistance to inSecticides - Test methods of insensitive acetylcholinesterase for Musca domestica 蝇类抗药性检测方法 家蝇不敏感乙酰胆碱酯酶法 |
China National Standards Sect |
English PDF |
| GB/T 26348-2010 |
Test methods of mosquito resistance to inSecticides - Test methods of insensitive acetylcholinesterase for the mosquito 蚊虫抗药性检测方法 不敏感乙酰胆碱酯酶法 |
China National Standards Sect |
English PDF |
| GB/T 26347-2010 |
Test methods of mosquito resistance to inSecticides - Bioassay methods 蚊虫抗药性检测方法 生物测定法 |
China National Standards Sect |
English PDF |
| GB/T 25922-2010 |
Measurement of fluid flow in closed conduits - Flowrate measurement by means of vortex shedding flowmeters inserted in circular cross-Section conduits running full 封闭管道中流体流量的测量 用安装在充满流体的圆形截面管道中的涡街流量计测量流量的方法 |
China National Standards Sect |
English PDF |
| GB/T 26027-2010 |
Aluminium and aluminium alloys drawn seamless tubes for large circumscribed circle diameter of cross Section 铝及铝合金大规格拉制无缝管 |
China National Standards Sect |
English PDF |
| GB 50647-2011 |
Code for planning of interSections on urban roads 城市道路交叉口规划规范 |
China National Standards Sect |
English PDF |
| GB/T 11263-2010 |
Hot-rolled H and cut T Section steel 热轧H型钢和剖分T型钢 |
China National Standards Sect |
English PDF |
| GB/T 17971.6-2010 |
Information technology - Keyboard layouts for text and office systems - Part 6: Function Section 信息技术 文本和办公系统的键盘布局 第6部分：功能区 |
China National Standards Sect |
English PDF |
| GB/T 17971.5-2010 |
Information technology - Keyboard layouts for text and office systems - Part 5: Editing Section 信息技术 文本和办公系统的键盘布局 第5部分：编辑区 |
China National Standards Sect |
English PDF |
| GB/T 17971.4-2010 |
Information technology - Keyboard layouts for text and office systems - Part 4: Numeric Section 信息技术 文本和办公系统的键盘布局 第4部分：数字区 |
China National Standards Sect |
English PDF |
| GB/T 17971.3-2010 |
Information technology - Keyboard layouts for text and office systems - Part 3: Complementary layouts of the alphanumeric zone of the alphanumeric Section 信息技术 文本和办公系统的键盘布局 第3部分：字母数字区的字母数字分区的补充布局 |
China National Standards Sect |
English PDF |
| GB/T 17971.2-2010 |
Information technology - Keyboard layouts for text and office systems - Part 2: Alphanumeric Section 信息技术 文本和办公系统的键盘布局 第2部分：字母数字区 |
China National Standards Sect |
English PDF |
| GB/T 25020.4-2010 |
Steel pole for overhead contact system of electrified railway - Part 4：H Section pole 电气化铁路接触网钢支柱 第4部分：H形支柱 |
China National Standards Sect |
English PDF |
| GB/T 24689.4-2009 |
Equipment for crop protection - InSect adhesive board 植物保护机械 诱虫板 |
China National Standards Sect |
English PDF |
| GB/T 1209.3-2009 |
Agricultural machinery - Cutter bars - Part 3:Knife Sections, ledger plates and knife backs 农业机械 切割器 第3部分：动刀片、定刀片和刀杆 |
China National Standards Sect |
English PDF |
| GB/T 4061-2009 |
Polycrystalline silicon-examination method-assessment of sandwiches on cross-Section by chemical corrosion 硅多晶断面夹层化学腐蚀检验方法 |
China National Standards Sect |
English PDF |
| GB/T 24534.4-2009 |
Cereals and pulses - Determination of hidden inSect infestation - Part 4: Rapid methods 谷物与豆类隐蔽性昆虫感染的测定 第4部分：快速方法 |
China National Standards Sect |
English PDF |
| GB/T 24534.3-2009 |
Cereals and pulses - Determination of hidden inSect infestation - Part 3: Reference method 谷物与豆类隐蔽性昆虫感染的测定 第3部分：基准方法 |
China National Standards Sect |
English PDF |
| GB/T 24534.2-2009 |
Cereals and pulses - Determination of hidden inSect infestation - Part 2: Sampling 谷物与豆类隐蔽性昆虫感染的测定 第2部分：取样 |
China National Standards Sect |
English PDF |
| GB/T 24534.1-2009 |
Cereals and pulses - Determination of hidden inSect infestation - Part 1: General principles 谷物与豆类隐蔽性昆虫感染的测定 第1部分：总则 |
China National Standards Sect |
English PDF |
| GB/T 22101.5-2009 |
Technical specification for evaluating resistance of cotton to diseases and inSect pests - Part 5: Verticillium wilt 棉花抗病虫性评价技术规范 第5部分：黄萎病 |
China National Standards Sect |
English PDF |
| GB/T 22101.4-2009 |
Technical specification for evaluating resistance of cotton to diseases and inSect pests - Part 4: Fusarium wilt 棉花抗病虫性评价技术规范 第4部分：枯萎病 |
China National Standards Sect |
English PDF |
| GB/T 22101.3-2009 |
Technical specification for evaluating resistance of cotton to disease and inSect pests - Part 3: Pink bollworm 棉花抗病虫性评价技术规范 第3部分：红铃虫 |
China National Standards Sect |
English PDF |
| GB/T 22101.2-2009 |
Technical specification for evaluating resistance of cotton to disease and inSect pests - Part 2: Cotton aphid 棉花抗病虫性评价技术规范 第2部分：蚜虫 |
China National Standards Sect |
English PDF |
| GB/T 18419-2009 |
Domestic sanitary inSecticidal aerosols 家用卫生杀虫用品 杀虫气雾剂 |
China National Standards Sect |
English PDF |
| GB/T 18418-2009 |
Domestic sanitary inSecticide electrothermal - Vaporizing liquid 家用卫生杀虫用品 电热蚊香液 |
China National Standards Sect |
English PDF |
| GB/T 18417-2009 |
Domestic sanitary inSecticide electrothermal - Vaporizing mats 家用卫生杀虫用品 电热蚊香片 |
China National Standards Sect |
English PDF |
| GB/T 18416-2009 |
Domestic sanitary inSecticide - Mosquito coils 家用卫生杀虫用品 蚊香 |
China National Standards Sect |
English PDF |
| GB 24330-2009 |
General security technical specification for domestic sanitary inSecticide 家用卫生杀虫用品安全通用技术条件 |
China National Standards Sect |
English PDF |
| GB/T 17980.149-2009 |
Pesticide - Guidelines for the field efficacy trials(2) - Part 149: InSecticides against solenopsis invicta buren 农药 田间药效试验准则(二) 第149部分：杀虫剂防治红火蚁 |
China National Standards Sect |
English PDF |
| GB/T 24421.4-2009 |
Guidelines for standardization of organizations in service Sector - Part 4: Standard actualize and appraise 服务业组织标准化工作指南 第4部分：标准实施及评价 |
China National Standards Sect |
English PDF |
| GB/T 24421.3-2009 |
Guidelines for standardization of organizations in service Sector - Part 3: The drafting of standards 服务业组织标准化工作指南 第3部分：标准编写 |
China National Standards Sect |
English PDF |
| GB/T 24421.2-2009 |
Guidelines for standardization of organizations in service Sector - Part 2: Standard system 服务业组织标准化工作指南 第2部分：标准体系 |
China National Standards Sect |
English PDF |
| GB/T 24421.1-2009 |
Guidelines for standardization of organizations in service Sector - Part 1: Basic requirements 服务业组织标准化工作指南 第1部分：基本要求 |
China National Standards Sect |
English PDF |
| GB/T 14395-2009 |
Coding rules for urban geographical features - City roads, road interSections, blocks and municipal pipe lines 城市地理要素编码规则 城市道路、道路交叉口、街坊、市政工程管线 |
China National Standards Sect |
English PDF |
| GB/T 23662-2009 |
Rubber seals for use between concrete motorway paving Sections 混凝土道路伸缩缝用橡胶密封件 |
China National Standards Sect |
English PDF |
| GB/T 23392.4-2009 |
Technical specification for the forecast of diseases and inSects on cruciferous plants - Part 4: Spodoptera exigua(Hvbner) 十字花科蔬菜病虫害测报技术规范 第4部分：甜菜夜蛾 |
China National Standards Sect |
English PDF |
| GB/T 23392.3-2009 |
Technical specification for the forecast of diseases and inSects on cruciferous plants - Part 3: Plutella xylostella linnaeus 十字花科蔬菜病虫害测报技术规范 第3部分：小菜蛾 |
China National Standards Sect |
English PDF |
| GB/T 23392.2-2009 |
Technical specification for the forecast of diseases and inSects on cruciferous plants - Part 2: Erwinia carotovora subsp. carotovora (Jones) Bergey et al. 十字花科蔬菜病虫害测报技术规范 第2部分：软腐病 |
China National Standards Sect |
English PDF |
| GB/T 23392.1-2009 |
Technical specification for the forecast of diseases and inSects on cruciferous plants - Part 1: Pernospora parasitica (Pers.) Fr. 十字花科蔬菜病虫害测报技术规范 第1部分：霜霉病 |
China National Standards Sect |
English PDF |
| GB/T 13917.9-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 9: Repellent 农药登记用卫生杀虫剂室内药效试验及评价 第9部分：驱避剂 |
China National Standards Sect |
English PDF |
| GB/T 13917.8-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 8: Dutsable powder and chalk 农药登记用卫生杀虫剂室内药效试验及评价 第8部分：粉剂、笔剂 |
China National Standards Sect |
English PDF |
| GB/T 13917.7-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 7: Bait 农药登记用卫生杀虫剂室内药效试验及评价 第7部分：饵剂 |
China National Standards Sect |
English PDF |
| GB/T 13917.6-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 6: Liquid vaporizer 农药登记用卫生杀虫剂室内药效试验及评价 第6部分：电热蚊香液 |
China National Standards Sect |
English PDF |
| GB/T 13917.5-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 5: Vaporizing mat 农药登记用卫生杀虫剂室内药效试验及评价 第5部分： 电热蚊香片 |
China National Standards Sect |
English PDF |
| GB/T 13917.4-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 4: Mosquito coil 农药登记用卫生杀虫剂室内药效试验及评价 第4部分：蚊香 |
China National Standards Sect |
English PDF |
| GB/T 13917.3-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 3: Smoke generator and smoke tablet 农药登记用卫生杀虫剂室内药效试验及评价 第3部分： 烟剂及烟片 |
China National Standards Sect |
English PDF |
| GB/T 13917.2-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 2: Aerosol 农药登记用卫生杀虫剂室内药效试验及评价 第2部分：气雾剂 |
China National Standards Sect |
English PDF |
| GB/T 13917.1-2009 |
Laboratory efficacy test methods and criterions of public health inSecticides for pesticide registration - Part 1: Spray fluid 农药登记用卫生杀虫剂室内药效试验及评价 第1部分： 喷射剂 |
China National Standards Sect |
English PDF |
| 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 Sect |
English PDF |
| GB/T 19290.5-2009 |
Modular order for the development of mechanical structures for electronic equipment practices - Part 2-3: Sectional specification - Interface co-ordination dimensions for the 25mm equipment practice - Extended detail specification - Dimensions for subrack 发展中的电子设备构体机械结构模数序列 第2-3部分：分规范 25mm设备构体的接口协调尺寸 扩展的详细规范 插箱、机箱、背板、面板和插件的尺寸 |
China National Standards Sect |
English PDF |
| GB/T 19290.4-2009 |
Modular order for the development of mechanical structures for electronic equipment practices - Part 2: Sectional specification - Interface co-ordination dimensions for the 25 mm equipment practice - Section 2: Detail specification - Dimensions for subrac 发展中的电子设备构体机械结构模数序列 第2-2部分：分规范 25mm设备构体的接口协调尺寸 详细规范 插箱、机箱、背板、面板和插件的尺寸 |
China National Standards Sect |
English PDF |
| GB/T 23222-2008 |
Grade and investigation method of tobacco diseases and inSect pests 烟草病虫害分级及调查方法 |
China National Standards Sect |
English PDF |
| GB/T 19290.3-2008 |
Modular order for the development of mechanical structures for electronic equipment practices - Part 2-1: Sectional specification - Interface co-ordination dimensions for the 25 mm equipment practice - Detail specification - Dimensions for cabinets and r 发展中的电子设备构体机械结构模数序列 第2-1部分：分规范 25mm设备构体的接口协调尺寸 详细规范 机柜和机架的尺寸 |
China National Standards Sect |
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 Sect |
English PDF |
| GB/T 22296-2008 |
Textile machinery - High precision Sectional warping machine 纺织机械 高精度分段整经机 |
China National Standards Sect |
English PDF |
| GB/T 706-2008 |
Hot rolled Section steel 热轧型钢 |
China National Standards Sect |
English PDF |
| GB/T 6725-2008 |
Cold forming steel Sections 冷弯型钢 |
China National Standards Sect |
English PDF |
| GB/T 6726-2008 |
Cold forming Sectional steel for vehicles - Dimensions, shape, weight and tolerances 汽车用冷弯型钢尺寸、外形、重量及允许偏差 |
China National Standards Sect |
English PDF |
| GB/T 6723-2008 |
Cold forming Sectional steel - Open sectional steel for general structure - Dimensions, shape, weight and permissible tolerances 通用冷弯开口型钢尺寸、外形、重量及允许偏差 |
China National Standards Sect |
English PDF |
| GB 4706.76-2008 |
Household and similar electrical appliances-Safety - Particular requirements for inSect killers 家用和类似用途电器的安全 灭虫器的特殊要求 |
China National Standards Sect |
English PDF |
| GB/T 4656-2008 |
Technical drawings - Simplified representation of bars and profile Sections 技术制图 棒料、型材及其断面的简化表示法 |
China National Standards Sect |
English PDF |
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