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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 43556.2-2023 |
Fiber Optic Cable Line Maintenance Technology Part 2: underground Splice Box Water Leakage Monitoring Using Optical Monitoring System 光纤光缆线路维护技术 第2部分：使用光学监测系统的地埋接头盒浸水监测 |
China National Standards under |
 English PDF |
| GB/T 34877.2-2023 |
Industrial fans - Determination of fan sound power levels under standard laboratory conditions - Part 2: Reverberation chamber method 工业风机 标准实验室条件下风机声功率级的测定 第2部分：混响室法 |
China National Standards under |
English PDF |
| GB/T 34877.1-2023 |
Industrial fans - Determination of fan sound power levels under standard laboratory conditions - Part 1: General requirements 工业风机 标准实验室条件下风机声功率级的测定 第1部分：通用要求 |
China National Standards under |
English PDF |
| GB/T 21008-2023 |
Safety requirements for underground mining aerial ropeways 地下矿用架空索道 安全要求 |
China National Standards under |
English PDF |
| GB/Z 17624.7-2023 |
Electromagnetic compatibility Overview Part 7: Power factor of single-phase systems under non-sinusoidal conditions 电磁兼容 综述 第7部分：非正弦条件下单相系统的功率因数 |
China National Standards under |
English PDF |
| GB/T 9089.3-2023 |
Electrical installations under severe outdoor conditions Part 3: General requirements for equipment and accessories 户外严酷条件下的电气设施 第3部分：设备及附件的一般要求 |
China National Standards under |
English PDF |
| GB/T 43289-2023 |
Plastics. Test method for determining the rate of decomposition and extent of disintegration of plastic materials in matrices exposed to the marine environment under laboratory conditions. 塑料 实验室条件下测定暴露于海洋环境基质中塑料材料分解率和崩解程度的试验方法 |
China National Standards under |
English PDF |
| GB/T 43287-2023 |
Plastics Determination of the degree of disintegration of plastic materials in the marine environment under actual field conditions 塑料 在实际野外条件海洋环境中塑料材料崩解度的测定 |
China National Standards under |
English PDF |
| GB/T 25851.2-2023 |
Mobile cranes - Test determination of crane performance - Part 2: Structural capacity under static loads 流动式起重机 起重机性能的试验测定 第2部分：静载荷作用下的结构能力 |
China National Standards under |
English PDF |
| GB/Z 21223.3-2023 |
Guidelines for statistical analysis of aging test data Part 3: Minimum number of specimens under different test conditions given test data 老化试验数据统计分析导则 第3部分：给定试验数据的不同试验条件下的最少试样数量 |
China National Standards under |
English PDF |
| GB/Z 20833.5-2023 |
Rotating electrical machines - Winding insulation - Part 5: Offline measurement of partial discharge onset voltage under repeated impulse voltages 旋转电机 绕组绝缘 第5部分：重复冲击电压下局部放电起始电压的离线测量 |
China National Standards under |
English PDF |
| GB/T 43183-2023 |
Technical Regulations for understory Cultivation of Asarum Asarum 北细辛林下栽培技术规程 |
China National Standards under |
English PDF |
| GB/T 43118-2023 |
Corrosion of metals and alloys Test method for high-temperature corrosion of metallic materials under the action of deposits of salt, ash or other substances 金属和合金的腐蚀 金属材料在盐、灰烬或其他物质的沉积物作用下进行高温腐蚀的试验方法 |
China National Standards under |
English PDF |
| GB/T 43096-2023 |
Metal powders. Determination of external specific surface area by powder layer permeability test under steady flow conditions. 金属粉末 稳态流动条件下粉末层透过性试验测定外比表面积 |
China National Standards under |
English PDF |
| GB/T 42987-2023 |
Urban underground space data requirements 城市地下空间数据要求 |
China National Standards under |
English PDF |
| GB/T 42912-2023 |
Corrosion of metals and alloys Test methods for high-temperature corrosion of metallic materials under static immersion in molten salts or other liquids 金属和合金的腐蚀 金属材料在静态浸入熔盐或其他液体条件下的高温腐蚀试验方法 |
China National Standards under |
English PDF |
| GB/T 17421.1-2023 |
General principles for inspection of machine tools Part 1: Geometric accuracy of machine tools under no-load or quasi-static conditions 机床检验通则 第1部分：在无负荷或准静态条件下机床的几何精度 |
China National Standards under |
English PDF |
| GB/T 38121-2023 |
Lightning Protection Thunderstorm Warning System 雷电防护 雷暴预警系统 |
China National Standards under |
English PDF |
| GB/T 42764-2023 |
Plastics - Evaluation of the intrinsic aerobic biodegradability of materials exposed to marine inoculum under laboratory mesophilic conditions - Test methods and requirements 塑料 在实验室中温条件下暴露于海洋接种物的材料固有需氧生物分解能力评估 试验方法与要求 |
China National Standards under |
English PDF |
| GB/T 9089.2-2023 |
Electrical installations under severe outdoor conditions - Part 2: General protection requirements 户外严酷条件下的电气设施 第2部分：一般防护要求 |
China National Standards under |
English PDF |
| GB/T 5989-2023 |
Refractories - Test method for softening temperature under load (differential heating method) 耐火材料 荷重软化温度试验方法(示差升温法) |
China National Standards under |
English PDF |
| GB/T 8878-2023 |
knitted underwear 针织内衣 |
China National Standards under |
English PDF |
| GB/T 42613-2023 |
Plain bearings - Tests for bearing materials - Resistance to corrosion by lubricants under static conditions 滑动轴承 轴承材料试验 静态条件下抗润滑剂腐蚀能力 |
China National Standards under |
English PDF |
| GB/T 42632-2023 |
Technical requirements for underwater cabled online monitoring system for marine ecological environment 海洋生态环境水下有缆在线监测系统技术要求 |
China National Standards under |
English PDF |
| GB/T 42640-2023 |
Technical specification for multi-beam underwater topographic survey 多波束水下地形测量技术规范 |
China National Standards under |
English PDF |
| GB/T 42638-2023 |
Method for direct measurement of coal seam gas drainage radius in underground coal mine - Drainage volume method 煤矿井下煤层瓦斯抽采半径直接测定方法 抽采量法 |
China National Standards under |
English PDF |
| GB/T 42368-2023 |
Method for Determination of Explosive Limits of Combustible Gas (Steam) under High Temperature and High Pressure Conditions 高温高压条件下可燃气体（蒸气）爆炸极限测定方法 |
China National Standards under |
English PDF |
| GB/T 42393-2023 |
Method for drawing regional wind damage distribution map of power grid under high altitude micro-topography and micro-meteorological conditions 高海拔微地形微气象条件下电网区域风害分布图绘制方法 |
China National Standards under |
English PDF |
| GB/Z 28820.4-2022 |
Long-term radiation aging of polymers - Part 4: Effect of different temperatures and dose rates under radiation conditions 聚合物长期辐射老化 第4部分：辐射条件下不同温度和剂量率的影响 |
China National Standards under |
English PDF |
| GB/T 41639-2022 |
Plastics Determination of disintegration rate of plastic materials under laboratory-scale simulated composting conditions 塑料 在实验室规模模拟堆肥化条件下塑料材料崩解率的测定 |
China National Standards under |
English PDF |
| GB/T 41455-2022 |
underground pipeline element data dictionary 地下管线要素数据字典 |
China National Standards under |
English PDF |
| GB/T 41447-2022 |
Technical specification for 3D modeling of urban underground space 城市地下空间三维建模技术规范 |
China National Standards under |
English PDF |
| GB/T 18380.34-2022 |
Fire tests of electric and optical cables under fire conditions - Part 34: vertical flame spread test for vertically mounted bunched wires and cables, class B 电缆和光缆在火焰条件下的燃烧试验 第34部分：垂直安装的成束电线电缆火焰垂直蔓延试验 B类 |
China National Standards under |
English PDF |
| GB/T 18380.33-2022 |
Fire tests of electric and optical cables under fire conditions - Part 33: vertical flame spread test for vertically mounted bunched wires and cables, class A 电缆和光缆在火焰条件下的燃烧试验 第33部分：垂直安装的成束电线电缆火焰垂直蔓延试验 A类 |
China National Standards under |
English PDF |
| GB/T 18380.32-2022 |
Fire tests of electric and optical cables under fire conditions - Part 32: vertical flame spread test for vertically mounted bunched wires and cables, class A, f / R 电缆和光缆在火焰条件下的燃烧试验 第32部分：垂直安装的成束电线电缆火焰垂直蔓延试验 A F/R类 |
China National Standards under |
English PDF |
| GB/T 13761.1-2022 |
Geosynthetics - Determination of thickness under specified pressure - Part 1: single layer products 土工合成材料 规定压力下厚度的测定 第1部分：单层产品 |
China National Standards under |
English PDF |
| GB/T 10811-2022 |
underglaze / medium color daily porcelain 釉下/中彩日用瓷器 |
China National Standards under |
English PDF |
| GB/T 41552-2022 |
Technical specification for ecological planting under Panax notoginseng forest 三七林下生态种植技术规程 |
China National Standards under |
English PDF |
| GB/T 41666.3-2022 |
Plastic piping systems for Trenchless repair of underground pressureless drainage networks - Part 3: close fitting lining method 地下无压排水管网非开挖修复用塑料管道系统 第 3 部分：紧密贴合内衬法 |
China National Standards under |
English PDF |
| GB/T 41415-2022 |
Textiles - Determination of dimensional change rate under dry, wet and hot conditions 纺织品 干湿热条件下尺寸变化率的测定 |
China National Standards under |
English PDF |
| GB/T 18380.36-2022 |
Tests on electric and optical fibre cables under fire conditions—Part 36：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category D 电缆和光缆在火焰条件下的燃烧试验 第36部分：垂直安装的成束电线电缆火焰垂直蔓延试验 D类 |
China National Standards under |
English PDF |
| GB/T 18380.35-2022 |
Tests on electric and optical fibre cables under fire conditions - Part 35: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category C 电缆和光缆在火焰条件下的燃烧试验 第35部分：垂直安装的成束电线电缆火焰垂直蔓延试验 C类 |
China National Standards under |
English PDF |
| GB/T 18380.31-2022 |
Tests on electric and optical fibre cables under fire conditions—Part 31: Test for vertical flame spread of vertically-mounted bunched wires or cables—Apparatus 电缆和光缆在火焰条件下的燃烧试验 第31部分：垂直安装的成束电线电缆火焰垂直蔓延试验 试验装置 |
China National Standards under |
English PDF |
| GB/T 18380.13-2022 |
Tests on electric and optical fibre cables under fire conditions—Part 13:Test for vertical flame propagation for a single insulated wire or cable—Procedure for determination of flaming droplets/particles 电缆和光缆在火焰条件下的燃烧试验 第13部分：单根绝缘电线电缆火焰垂直蔓延试验 测定燃烧的滴落（物）/微粒的试验方法 |
China National Standards under |
English PDF |
| GB/T 18380.12-2022 |
Tests on electric and optical fibre cables under fire conditions—Part 12:Test for vertical flame propagation for a single insulated wire or cable—Procedure for 1 kW pre-mixed flame 电缆和光缆在火焰条件下的燃烧试验 第12部分：单根绝缘电线电缆火焰垂直蔓延试验 1 kW 预混合型火焰试验方法 |
China National Standards under |
English PDF |
| GB/T 18380.11-2022 |
Tests on electric and optical fibre cables under fire conditions—Part 11:Test for vertical flame propagation for a single insulated wire or cable—Apparatus 电缆和光缆在火焰条件下的燃烧试验 第11部分：单根绝缘电线电缆火焰垂直蔓延试验 试验装置 |
China National Standards under |
English PDF |
| GB/T 41311.1-2022 |
Acoustics - Describe the quantity of underwater noise from ships and methods of measurement - Part 1: Requirements for precision measurements in deep water for comparison purposes 声学 描述船舶水下噪声的量及其测量方法 第1部分：用于比对目的的深水精密测量要求 |
China National Standards under |
English PDF |
| GB/T 41332-2022 |
Technical requirements for remote detection equipment for municipal underground pipelines 市政地下管线远程探测设备技术要求 |
China National Standards under |
English PDF |
| GB/T 42164-2022 |
Leather - Chemical tests - Determination of hexavalent chromium content under heat aging conditions 皮革 化学试验 热老化条件下六价铬含量的测定 |
China National Standards under |
English PDF |
| GB/T 42141-2022 |
Design criteria for radiation protection of nuclear island buildings under accident conditions in pressurized water reactor nuclear power plants 压水堆核电厂事故工况核岛厂房辐射防护设计准则 |
China National Standards under |
English PDF |
| GB/T 41925-2022 |
Classification of Urban underground Space and Underground Engineering 城市地下空间与地下工程分类 |
China National Standards under |
English PDF |
| GB/T 42266-2022 |
Flexible porous polymeric materials - Laboratory evaluation of the combustion characteristics of small specimens in the horizontal direction under a small flame 柔性多孔聚合物材料 小试样在小火焰下水平方向燃烧特性的实验室评估 |
China National Standards under |
English PDF |
| GB/T 42267-2022 |
Determination of compression set of flexible porous polymeric materials under wet conditions 柔性多孔聚合物材料 在潮湿条件下压缩永久变形的测定 |
China National Standards under |
English PDF |
| GB/T 42261-2022 |
Metal and other inorganic coatings - thermal cycle test method for thermal barrier coatings under temperature gradient 金属及其他无机覆盖层 温度梯度下热障涂层热循环试验方法 |
China National Standards under |
English PDF |
| GB/T 13477.23-2022 |
Test methods for building sealing materials - Part 23: Determination of durability after tension-compression cycles under artificial accelerated weathering 建筑密封材料试验方法 第23部分：人工加速气候老化下拉伸-压缩循环后耐久性的测定 |
China National Standards under |
English PDF |
| GB/T 41813.2-2022 |
Information technology—Test methods for intelligent voice interaction—Part 2: Semantic understanding 信息技术 智能语音交互测试方法 第2部分：语义理解 |
China National Standards under |
English PDF |
| GB/T 21352-2022 |
Steel cord core flame retardant conveyor belt for underground mine 地下矿井用钢丝绳芯阻燃输送带 |
China National Standards under |
English PDF |
| GB/T 41981.2-2022 |
Connections for hydraulic transmissions - Pressure fittings - Part 2: Connectable under pressure 液压传动连接 测压接头 第2部分：可带压连接式 |
China National Standards under |
English PDF |
| GB/T 22359.1-2022 |
Earth-moving and building construction machinery - Electromagnetic compatibility (EMC) of machines with built-in power supply - Part 1: General requirements for EMC under typical electromagnetic environmental conditions 土方机械与建筑施工机械 内置电源机器的电磁兼容性（EMC） 第1部分：典型电磁环境条件下的EMC一般要求 |
China National Standards under |
English PDF |
| GB/T 42059-2022 |
Test methods for underwater glider systems 水下滑翔器系统试验方法 |
China National Standards under |
English PDF |
| GB 16993-2021 |
Safety regulations for avoid working under hazardous condition of oxygen deficiency in enclosed spaces aboard ships 防止船舶封闭处所缺氧危险作业安全规程 |
China National Standards under |
English PDF |
| GB/T 40504-2021 |
Management specification for water conservation on laundering of public textiles 公用纺织品洗涤场所节水管理规范 |
China National Standards under |
English PDF |
| GB/T 40118-2021 |
Plain bearings—Testing under conditions of hydrodynamic and mixed lubrication in test rigs 滑动轴承 流体动压和混合润滑条件台架试验 |
China National Standards under |
English PDF |
| GB/T 19216.3-2021 |
Circuit integrity test for electric cables or optical fiber cables under fire conditions—Part 3:Test method for fire with shock at a temperature of at least 830℃ for cables of rated voltage up to and including 0.6/1 kV tested in a metal enclosure 在火焰条件下电缆或光缆的线路完整性试验 第3部分：火焰温度不低于830 ℃的供火并施加冲击振动，额定电压0.6/1 kV及以下电缆穿在金属管中进行的试验方法 |
China National Standards under |
English PDF |
| GB/T 19216.2-2021 |
Circuit integrity test for electric cables or optical fiber cables under fire conditions - Part 2: Test method for fire with shock at a temperature of at least 830 ℃ for cables of rated voltage up to and including 0.6/1 kV and with an overall diameter not 在火焰条件下电缆或光缆的线路完整性试验 第2部分：火焰温度不低于830 ℃的供火并施加冲击振动，额定电压0.6/1 kV及以下外径不超过20 mm电缆的试验方法 |
China National Standards under |
English PDF |
| GB/T 19216.1-2021 |
Circuit integrity test for electric cables or optical fiber cables under fire conditions-Part 1:Test method for fire with shock at atemperature of at least 830 ℃ for cables of rated voltage up to and including 0.6/ 1 kV and with an overall diameter exceed 在火焰条件下电缆或光缆的线路完整性试验 第1部分：火焰温度不低于830 ℃的供火并施加冲击振动，额定电压0.6/1 kV及以下外径超过20 mm电缆的试验方法 |
China National Standards under |
English PDF |
| GB 16993-2021 |
Safety regulations for avoid working under hazardous condition of oxygen deficiency in enclosed spaces aboard ships 防止船舶封闭处所缺氧危险作业安全规程 |
China National Standards under |
English PDF |
| GB/T 39997-2021 |
Thermoplastic pipework for underground installation at petrol filling stations 加油站埋地用热塑性塑料复合管道系统 |
China National Standards under |
English PDF |
| GB/T 17651.2-2021 |
Measurement of smoke density of cables or optical fiber cables burning under defined conditions - Part 2: Test procedure and requirements 电缆或光缆在特定条件下燃烧的烟密度测定 第2部分：试验程序和要求 |
China National Standards under |
English PDF |
| GB/T 17651.1-2021 |
Measurement of smoke density of cables or optical fiber cables burning under defined conditions-Part 1:Test apparatus 电缆或光缆在特定条件下燃烧的烟密度测定 第1部分：试验装置 |
China National Standards under |
English PDF |
| GB/T 39748.7-2021 |
Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 7:Gravimetric determination of absorption under pressure 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测试方法 第7部分：称重法测定压力作用下的吸液量 |
China National Standards under |
English PDF |
| GB/T 39938-2021 |
Electric room heating—underfloor heating—Performance characteristics—Definitions, method of testing, sizing and formula symbols 室内电取暖 地暖 性能特征 定义、测试方法、尺寸和公式符号 |
China National Standards under |
English PDF |
| GB/T 4652-2021 |
Loader for underground mining—Testing method 地下矿用装岩机和装载机 试验方法 |
China National Standards under |
English PDF |
| GB/T 40588-2021 |
Technical provisions for automatic under-voltage load shedding in electric power systems 电力系统自动低压减负荷技术规定 |
China National Standards under |
English PDF |
| GB/T 40596-2021 |
Technical rules for automatic under-frequency load shedding in electric power systems 电力系统自动低频减负荷技术规定 |
China National Standards under |
English PDF |
| GB/T 3836.30-2021 |
Explosive atmospheres—Part 30: Equipment and components in explosive atmospheres in underground mines 爆炸性环境 第30部分：地下矿井爆炸性环境用设备和元件 |
China National Standards under |
English PDF |
| GB/T 9089.1-2021 |
Electrical installations for outdoor sites under heavy conditions—Part 1: Vocabulary 户外严酷条件下的电气设施 第1部分：术语 |
China National Standards under |
English PDF |
| GB/T 38832-2020 |
Technical requirements of broadband customer networking based on public telecommunication network—High-speed visible light communications under lighting constrains 基于公用电信网的宽带客户网络联网技术要求 通照一体化高速可见光通信 |
China National Standards under |
English PDF |
| GB/T 50455-2020 |
Standayd for design of underground oil storage in rock caverns 地下水封石洞油库设计标准 |
China National Standards under |
English PDF |
| GB/T 39624-2020 |
Technical specification for underwater topographic survey of airborne lidar 机载激光雷达水下地形测量技术规范 |
China National Standards under |
English PDF |
| GB/T 39383-2020 |
Thermoplastics piping systems for underground non-pressure applications—Test method for leaktightness of elastomeric sealing ring type joints 埋地用无压热塑性塑料管道系统 弹性密封圈接头的密封性能试验方法 |
China National Standards under |
English PDF |
| GB/T 39227-2020 |
Immunity time testing method under voltage dip for sensitive process rated less than 1000 V 1000 V以下敏感过程电压暂降免疫时间测试方法 |
China National Standards under |
English PDF |
| GB/T 38430-2019 |
Corrosion of metals and alloys—Test method for isothermal-exposure oxidation testing under high-temperature corrosion conditions for metallic materials 金属和合金的腐蚀 金属材料在高温腐蚀条件下的等温暴露氧化试验方法 |
China National Standards under |
English PDF |
| GB/T 37990-2019 |
Technical requirements of anti-washout admixture for underwater concrete 水下不分散混凝土絮凝剂技术要求 |
China National Standards under |
English PDF |
| GB/T 37921-2019 |
Wind turbines generator system under high altitude 高海拔型风力发电机组 |
China National Standards under |
English PDF |
| GB/T 37825-2019 |
Test method for simulating wind pressure resistance of building glass under the uniform static loads 建筑玻璃均布静载模拟风压试验方法 |
China National Standards under |
English PDF |
| GB/T 37807-2019 |
Technical specification for underground goaf survey of open-pit coal mine 露天煤矿井采采空区勘查技术规范 |
China National Standards under |
English PDF |
| GB/T 19472.1-2019 |
Polyethylene structure wall pipeline system for underground usage—Part 1: Polyethylene double wall corrugated pipes 埋地用聚乙烯（PE）结构壁管道系统 第1部分：聚乙烯双壁波纹管材 |
China National Standards under |
English PDF |
| GB/T 18477.3-2019 |
Unplasticized polyvinyl chloride (PVC-U) structure wall pipeline system for underground soil waste and drainage—Part 3: Axial hollow-wall construction pipes 埋地排水用硬聚氯乙烯（PVC-U）结构壁管道系统 第3部分：轴向中空壁管材 |
China National Standards under |
English PDF |
| GB/T 51358-2019 |
Standard for urban underground space planning 城市地下空间规划标准 |
China National Standards under |
English PDF |
| GB/T 1634.2-2019 |
Plastics-Determination of temperature of deflection under load-Part 2:Plastics and ebonite 塑料 负荷变形温度的测定 第2部分：塑料和硬橡胶 |
China National Standards under |
English PDF |
| GB/T 1634.1-2019 |
Plastics—Determination of temperature of deflection under load—Part 1:General test method 塑料 负荷变形温度的测定 第1部分:通用试验方法 |
China National Standards under |
English PDF |
| GB/T 37449-2019 |
Design requirements for offshore cranes under ice condition 冰区环境下海洋平台起重机的设计要求 |
China National Standards under |
English PDF |
| GB/T 3480.6-2018 |
Calculation of load capacity of spur and helical gears—Part 6:Calculation of service life under variable load 直齿轮和斜齿轮承载能力计算-第6部分：变载荷条件下的使用寿命计算 |
China National Standards under |
English PDF |
| GB/T 35451.2-2018 |
Polypropylene(PP) structure-wall piping systems for underground drainage and sewerage—Part 2: Polypropylene spirally enwound structure-wall pipes 埋地排水排污用聚丙烯(PP)结构壁管道系统-第2部分：聚丙烯缠绕结构壁管材 |
China National Standards under |
English PDF |
| GB 3847-2018 |
Limits and measurement methods for emissions form diesel vehicles under free acceleration and lugdown cycle 柴油车污染物排放限值及测量方法（自由加速法及加载减速法） |
China National Standards under |
English PDF |
| GB 18285-2018 |
Limits and measurement methods for emissions from gasoline vehicles under two-speed idle conditions and simple driving mode conditions 汽油车污染物排放限值及测量方法（双怠速法及简易工况法） |
China National Standards under |
English PDF |
| GB/T 51336-2018 |
Seismic design standard for underground structures 地下结构抗震设计标准 |
China National Standards under |
English PDF |
| GB/T 37255-2018 |
Test method for pyroelectric coefficient of materials under DC bias field 偏置电场下材料热释电系数测试方法 |
China National Standards under |
English PDF |
| GB/T 4059-2018 |
Test method for phosphorus content in polycrystalline silicon by zone-melting method under controlled atmosphere 硅多晶气氛区熔基磷检验方法 |
China National Standards under |
English PDF |
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