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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 40067-2021 |
Microstructure and defect determination of tungsten carbide powder 碳化钨粉末微观组织及缺陷检测方法 |
China National Standards et |
 English PDF |
| GB/T 40007-2021 |
Nanotechnology—Contacting methods for measuring the resistivity of nanomaterials—General rules 纳米技术 纳米材料电阻率的接触式测量方法 通则 |
China National Standards et |
English PDF |
| GB/T 40006.2-2021 |
Plastics—Recycled plastics—Part 2:Polyethylene(PE) materials 塑料 再生塑料 第2部分：聚乙烯(PE)材料 |
China National Standards et |
English PDF |
| GB/T 39981-2021 |
Building construction machinery and equipment—Portable,hand-held,internal combustion engine driven cut-off machines—Safety requirements 建筑施工机械与设备 便携、手持、内燃机式切割机 安全要求 |
China National Standards et |
English PDF |
| GB/T 39978-2021 |
Nanotechnology—Resistivity of carbon nanotube powder—Four probe method 纳米技术 碳纳米管粉体电阻率 四探针法 |
China National Standards et |
English PDF |
| GB/T 39977-2021 |
General technical requirements for aquarium poly(methyl methacrylate) sheets 水族馆用聚甲基丙烯酸甲酯板材通用技术要求 |
China National Standards et |
English PDF |
| GB/T 39971-2021 |
Thresholds and grading of relative wet grip index for motor vehicle tyres 汽车轮胎湿路面相对抓着指数限值和等级 |
China National Standards et |
English PDF |
| GB/T 38051.1-2021 |
Household electric cooking appliances—Part 1：Ranges, ovens, steam ovens and grills—Methods for measuring performance 家用烹饪电器 第1部分：电灶、烤箱、蒸箱和烤架 性能测试方法 |
China National Standards et |
English PDF |
| GB/T 38047.2-2021 |
Evaluation methods for reliability on smart household appliances - Part 2: Special requirements for room air conditioners 智能家用电器可靠性评价方法 第2部分：房间空气调节器的特殊要求 |
China National Standards et |
English PDF |
| GB/T 35205.5-2021 |
Rough-terrain trucks - Safety requirements and verificaiton - Part 5: Interface between variable-reach truck and integrated personnnel work platform 越野叉车 安全要求及验证 第5部分：伸缩臂式叉车和集成式人员工作平台的连接装置 |
China National Standards et |
English PDF |
| GB/T 34520.9-2021 |
Test methods of continuous silicon carbide fibers - Part 9: Carbon content 连续碳化硅纤维测试方法 第9部分：碳含量 |
China National Standards et |
English PDF |
| GB/T 31838.7-2021 |
Solid insulating materials - Dielecteric and resistive properties - Part 7: Resistive properties(DC method) - Measurement of volume resistance and volume resistivity at elevated temperatures 固体绝缘材料 介电和电阻特性 第7部分：电阻特性(DC方法) 高温下测量体积电阻和体积电阻率 |
China National Standards et |
English PDF |
| GB/T 31838.6-2021 |
Solid insulating materials—Dielectric and resistive properties—Part 6:Dielectric properties(AC method)—Relative permittivity and dielectric dissipation factor(frequencies 0.1Hz～10 MHz) 固体绝缘材料 介电和电阻特性 第6部分：介电特性（AC方法） 相对介电常数和介质损耗因数（频率0.1Hz~10MHz） |
China National Standards et |
English PDF |
| GB/T 31838.5-2021 |
Solid insulating materials - Dielectric and resistive properties - Part 5: Resistive properties(DC method) - Volume resistance and volume resistivity of impregnation and coating materials 固体绝缘材料 介电和电阻特性 第5部分：电阻特性(DC方法) 浸渍和涂层材料的体积电阻和体积电阻率 |
China National Standards et |
English PDF |
| GB/T 29716.3-2021 |
Mechanical vibration and shock—Signal processing—Part 3:Methods of time-frequency analysis 机械振动与冲击 信号处理 第3部分：时频分析方法 |
China National Standards et |
English PDF |
| GB/T 28543-2021 |
Noise measurement method on power capacitors 电力电容器噪声测量方法 |
China National Standards et |
English PDF |
| GB/T 27800-2021 |
Determination of the life for static sealing rubber products 静密封橡胶制品使用寿命的快速预测方法 |
China National Standards et |
English PDF |
| GB/T 27021.3-2021 |
Conformity assessment - Requirements for bodies providing audit and certification of management systems - Part 3: Competence requirements for auditing and certification of quality management systems 合格评定 管理体系审核认证机构要求 第3部分：质量管理体系审核与认证能力要求 |
China National Standards et |
English PDF |
| GB/T 27021.2-2021 |
Conformity assessment - Requirements for bodies providing audit and certification of management systems - Part 2: Competence requirements for auditing and certification of environmental management systems 合格评定 管理体系审核认证机构要求 第2部分：环境管理体系审核与认证能力要求 |
China National Standards et |
English PDF |
| GB/T 24279.2-2021 |
Textiles - Determination of certain flame retardants - Part 2: Phosphorus flame retardants 纺织品 某些阻燃剂的测定 第2部分:磷系阻燃剂 |
China National Standards et |
English PDF |
| GB/T 23902-2021 |
Non-destructive testing - Ultrasonic testing - Time-of-flight diffraction technique as a method for detection and sizing of discontinuities 无损检测 超声检测 超声衍射声时技术检测和评价方法 |
China National Standards et |
English PDF |
| GB/T 22889-2021 |
Leather—Physical and mechanical tests—Determination of surface coating thickness 皮革 物理和机械试验 表面涂层厚度的测定 |
China National Standards et |
English PDF |
| GB/T 22888-2021 |
Leather - Physical and mechanical tests - Determination of cold crack temperature of surface coatings 皮革 物理和机械试验 表面涂层低温脆裂温度的测定 |
China National Standards et |
English PDF |
| GB/T 22808-2021 |
Leather and fur-Chemical tests-Determination of chlorinated phenols content 皮革和毛皮 化学试验 含氯苯酚的测定 |
China National Standards et |
English PDF |
| GB/T 22459.8-2021 |
Refractory mortars-Part 8:Determination of bleeding 耐火泥浆 第8部分：泌水性试验方法 |
China National Standards et |
English PDF |
| GB/T 17934.2-2021 |
Graphic technology—Process control for the production of half-tone colour separations,proof and production prints—Part 2:Offset lithographic processes 印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第2部分：平版胶印 |
China National Standards et |
English PDF |
| GB/T 17934.1-2021 |
Graphic technology-Process control for the production of half-tone colour separations，proof and production prints-Part 1:Parameters and measurement methods 印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第1部分：参数与测量方法 |
China National Standards et |
English PDF |
| GB/T 17751-2021 |
Survey-evaluation method of energy utilization for transport ships 运输船舶能源利用监测评价方法 |
China National Standards et |
English PDF |
| GB/Z 17624.3-2021 |
Electromagnetic compatibility - General - Part 3: The effects of high-altitude EMP(HEMP) on civil equipment and systems 电磁兼容 综述 第3部分：高空电磁脉冲(HEMP)对民用设备和系统的效应 |
China National Standards et |
English PDF |
| GB/T 16754-2021 |
Safety of machinery—Emergency stop function—Principles for design 机械安全 急停功能 设计原则 |
China National Standards et |
English PDF |
| GB/T 16137-2021 |
Methods for estimation of examinee’s organ doses in X-ray diagnosis X射线诊断中受检者器官剂量的估算方法 |
China National Standards et |
English PDF |
| GB/T 15972.47-2021 |
Specifications for optical fibre test method - Part 47: Measurement methods and test procedures for transmission characteristics - Macrobending loss 光纤试验方法规范 第47部分：传输特性的测量方法和试验程序 宏弯损耗 |
China National Standards et |
English PDF |
| GB/T 15765-2021 |
Hermetic motor-compressors for room air conditioners 房间空气调节器用全封闭型电动机-压缩机 |
China National Standards et |
English PDF |
| GB/T 14949.5-2021 |
Manganese ores一Determination of titanium content一Diantipyrylmethane spectrophotometric method 锰矿石 钛含量的测定 二安替吡啉甲烷分光光度法 |
China National Standards et |
English PDF |
| GB/T 14949.12-2021 |
Manganese ores - Determination of combined water content - Gravimetric method 锰矿石 化合水含量的测定 重量法 |
China National Standards et |
English PDF |
| GB/T 14230-2021 |
Test method of tooth bending strength for gear load capacity 齿轮弯曲疲劳强度试验方法 |
China National Standards et |
English PDF |
| GB/T 14229-2021 |
Test method of surface contact strength for gear load capacity 齿轮接触疲劳强度试验方法 |
China National Standards et |
English PDF |
| GB/T 14146-2021 |
Test method for carrier concentration of silicon epitaxial layers - Capacitance-voltage method 硅外延层载流子浓度的测试 电容-电压法 |
China National Standards et |
English PDF |
| GB/T 13173-2021 |
Surface active agents - Test methods for detergents 表面活性剂 洗涤剂试验方法 |
China National Standards et |
English PDF |
| GB/T 12807-2021 |
Laboratory glassware-Graduated pipettes 实验室玻璃仪器 分度吸量管 |
China National Standards et |
English PDF |
| GB/T 12703.2-2021 |
Textiles - Test methods for electrostatic propensity - Part 2: Test method using manual friction 纺织品 静电性能试验方法 第2部分：手动摩擦法 |
China National Standards et |
English PDF |
| GB/T 12703.1-2021 |
Textiles - Test methods for electrostatic propensity - Part 1: Test method using corona charging 纺织品 静电性能试验方法 第1部分：电晕充电法 |
China National Standards et |
English PDF |
| GB/T 12265-2021 |
Safety of machinery—Minimum gaps to avoid crushing of parts of the human body 机械安全 防止人体部位挤压的最小间距 |
China National Standards et |
English PDF |
| GB/T 12190-2021 |
Method for measuring the shielding effectiveness of electromagnetic shielding enclosures 电磁屏蔽室屏蔽效能的测量方法 |
China National Standards et |
English PDF |
| GB/T 10067.36-2021 |
Basic specification for electroheating and electromagnetic processing installations—Part 36:Induction through-heating installations 电热和电磁处理装置基本技术条件 第36部分：感应透热装置 |
China National Standards et |
English PDF |
| GB/T 10066.32-2021 |
Test methods for electroheating and electromagnetic processing installations-Part 32:Induction through-heating installations 电热和电磁处理装置的试验方法 第32部分：感应透热装置 |
China National Standards et |
English PDF |
| GB/T 9966.9-2021 |
Test methods for natural stone—Part 9: Determination of the dynamic modulus of elasticity by measuring the fundamental resonance frequency 天然石材试验方法 第9部分：通过测量共振基本频率测定动力弹性模数 |
China National Standards et |
English PDF |
| GB/T 9966.13-2021 |
Test methods for natural stone—Part 13:Determination of water absorption coefficient by capillarity 天然石材试验方法 第13部分：毛细吸水系数的测定 |
China National Standards et |
English PDF |
| GB/T 9966.11-2021 |
Test methods for natural stone—Part 11: Determination of resistance to ageing by cold and thermal shock 天然石材试验方法 第11部分：激冷激热加速老化强度测定 |
China National Standards et |
English PDF |
| GB/T 8243.12-2021 |
Methods of test for full-flow lubricating oil filters for internal combustion engines—Part 12: Filtration efficiency using particle counting and contaminant retention capacity 内燃机全流式机油滤清器试验方法 第12部分：颗粒计数法滤清效率和容灰量 |
China National Standards et |
English PDF |
| GB/T 8152.15-2021 |
Methods for chemical analysis of lead concentrates—Part 15:Determination of soluble lead content—Flame atomic absorption spectrometry 铅精矿化学分析方法 第15部分：可溶性铅含量的测定 火焰原子吸收光谱法 |
China National Standards et |
English PDF |
| GB/T 7925-2021 |
NC reciprocating traveling type wire electrical-discharge machines—Parameters 数控往复走丝电火花线切割机床 参数 |
China National Standards et |
English PDF |
| GB/T 7739.4-2021 |
Methods for chemical analysis of gold concentrates—Part 4:Determination of copper content 金精矿化学分析方法 第4部分：铜量的测定 |
China National Standards et |
English PDF |
| GB/T 6546-2021 |
Corrugated fibreboard—Determination of edgewise crush resistance 瓦楞纸板 边压强度的测定 |
China National Standards et |
English PDF |
| GB/T 6113.103-2021 |
Specification for radio disturbance and immunity measuring apparatus and methods—Part 1-3:Radio disturbance and immunity measuring apparatus—Ancillary equipment—Disturbances power 无线电骚扰和抗扰度测量设备和测量方法规范 第1-3部分：无线电骚扰和抗扰度测量设备 辅助设备 骚扰功率 |
China National Standards et |
English PDF |
| GB/T 4893.1-2021 |
Test of surface coatings of furniture—Part 1: Determination of surface resistance to cold liquids 家具表面漆膜理化性能试验 第1部分：耐冷液测定法 |
China National Standards et |
English PDF |
| GB/T 4798.2-2021 |
Classification of environmental conditions—Classification of groups of environmental parameters and their severities—Part 2:Transportation and handling 环境条件分类 环境参数组分类及其严酷程度分级 第2部分：运输和装卸 |
China National Standards et |
English PDF |
| GB/T 2423.38-2021 |
Environmental testing-Part 2:Test methods-Test R:Water test method and guidance 环境试验 第2部分：试验方法 试验R：水试验方法和导则 |
China National Standards et |
English PDF |
| GB/T 2423.33-2021 |
Environmental testing - Part 2: Test methods - Test Kca: High concentration sulfur dioxid 环境试验 第2部分：试验方法 试验Kca：高浓度二氧化硫试验 |
China National Standards et |
English PDF |
| GB/T 2423.18-2021 |
Environmental testing—Part 2: Test methods—Test Kb:Salt mist, cyclic（sodium chloride solution） 环境试验 第2部分：试验方法 试验Kb：盐雾，交变（氯化钠溶液） |
China National Standards et |
English PDF |
| GB/T 2351-2021 |
Fluid power systems and components-Outside diameters of tubes and inside diameters of hoses 流体传动系统及元件 硬管外径和软管内径 |
China National Standards et |
English PDF |
| GB/T 1551-2021 |
Test method for measuring resistivity of monocrystal silicon—In-line four-point probe and direct current two-point probe method 硅单晶电阻率的测定 直排四探针法和直流两探针法 |
China National Standards et |
English PDF |
| GB/T 22394.2-2021 |
Condition monitoring and diagnostics of machines - Data interpretation and diagnostics techniques - Part 2: Data-driven applications 机器状态监测与诊断 数据判读与诊断技术 第2部分：数据驱动的应用 |
China National Standards et |
English PDF |
| GB/T 22148.3-2021 |
Test method on electromagnetic emissions—Part 3:Electronic control gear for LED modules 电磁发射的试验方法 第3部分：LED模块用电子控制装置 |
China National Standards et |
English PDF |
| GB/T 22114-2021 |
Humectants for toothpastes - Glycerin and polyethylene glycol 牙膏用保湿剂 甘油和聚乙二醇 |
China National Standards et |
English PDF |
| GB/T 21227-2021 |
AC loss measurements—Magnetometer methods for hysteresis loss in superconducting multifilamentary composites 交流损耗测量 多丝复合超导材料磁滞损耗的磁强计测量法 |
China National Standards et |
English PDF |
| GB/T 20373-2021 |
Determination of acetyl content in modified starch—Titrimetric method 变性淀粉中乙酰基含量的测定 滴定法 |
China National Standards et |
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 et |
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 et |
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 et |
English PDF |
| GB/T 18216.5-2021 |
Electrical safety in low voltage distribution systems up to 1 000 V a.c, and 1500 V d.c.-Equipment for testing，measuring or monitoring of protective measures-Part 5:Resistance to earth 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第5部分：对地电阻 |
China National Standards et |
English PDF |
| GB/T 18216.4-2021 |
Electrical safety in low voltage distribution systems up to 1 000 V a. c and 1 500 V d. c - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第4部分：接地电阻和等电位接地电阻 |
China National Standards et |
English PDF |
| GB/T 18216.3-2021 |
Electrical safety in low voltage distribution systems up to 1 000 V a. c. and 1 500 V d. c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第3部分：环路阻抗 |
China National Standards et |
English PDF |
| GB/T 18216.2-2021 |
Electrical safety in low voltage distribution systems up to 1 000 V a. c. and 1 500 V d. c. - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第2部分：绝缘电阻 |
China National Standards et |
English PDF |
| GB/T 18216.1-2021 |
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c.—Equipment for testing,measuring or monitoring of protective measures—Part 1:General requirements 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第1部分：通用要求 |
China National Standards et |
English PDF |
| GB/T 40169-2021 |
Compression-moulded plates of ultra-high-molecular-weight polyethylene(PE-UHMW)and high density polyethylene (PE-HD) 超高分子量聚乙烯（PE-UHMW）和高密度聚乙烯（PE-HD）模塑板材 |
China National Standards et |
English PDF |
| GB 9656-2021 |
Safety technical specification for glazing materials used in power-driven vehicles 机动车玻璃安全技术规范 |
China National Standards et |
English PDF |
| GB 40159-2021 |
En-masse conveyors—Safety rules 埋刮板输送机 安全规范 |
China National Standards et |
English PDF |
| GB 40160-2021 |
Safety rules for elevating work platforms 升降工作平台安全规则 |
China National Standards et |
English PDF |
| GB 40161-2021 |
Filters—Safety requirements 过滤机 安全要求 |
China National Standards et |
English PDF |
| GB 40165-2021 |
Lithium ion cells and batteries used in stationary electronic equipments—Safety technical specification 固定式电子设备用锂离子电池和电池组 安全技术规范 |
China National Standards et |
English PDF |
| GB 17957-2021 |
Rock drilling machines and pneumatic tools—Safety requirements 凿岩机械与气动工具 安全要求 |
China National Standards et |
English PDF |
| GB 19815-2021 |
Centrifuge—Safety requirements 离心机 安全要求 |
China National Standards et |
English PDF |
| GB 40164-2021 |
Automobiles and trailer - Specifications and test methods of brake part 汽车和挂车 制动器用零部件技术要求及试验方法 |
China National Standards et |
English PDF |
| GB/T 40058-2021 |
Coding specification for the national fixed assets investment projects 全国固定资产投资项目代码编码规范 |
China National Standards et |
English PDF |
| GB/T 40043-2021 |
Specification of information exchange between express service and electronic commerce 快递服务与电子商务信息交换规范 |
China National Standards et |
English PDF |
| GB/T 39885-2021 |
Examination methods for triazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中三唑仑检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39884-2021 |
Examination methods for three components in cannabis in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中大麻三种成分检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39883-2021 |
Examination methods for morphine in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中吗啡检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39882-2021 |
Examination methods for methylene dioxymetham phetamine in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中二亚甲基双氧安非他明检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39881-2021 |
Examination methods for methaqualone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中安眠酮检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39880-2021 |
Examination methods for methadone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中美沙酮检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39879-2021 |
Examination methods for five components in opium in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中鸦片五种成分检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39878-2021 |
Examination methods for estazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中艾司唑仑检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39877-2021 |
Examination methods for diazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中地西泮检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39876-2021 |
Examination methods for cocaine in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中可卡因检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39875-2021 |
Examination methods for chlordiazepoxide in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中氯氮卓检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 39874-2021 |
Examination methods for bromazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry 疑似毒品中溴西泮检验 气相色谱和气相色谱-质谱法 |
China National Standards et |
English PDF |
| GB/T 28515.2-2021 |
Test method for automatically switched optical network(ASON)—Part 2:OTN-based ASON 自动交换光网络(ASON)测试方法 第2部分：基于OTN的ASON |
China National Standards et |
English PDF |
| GB/T 21548-2021 |
Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems 光通信用高速直接调制半导体激光器的测量方法 |
China National Standards et |
English PDF |
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