Cart:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 43282.2-2023 |
Plastics. Determination of aerobic biodegradation of plastic materials exposed to seawater. Part 2: Method for determination of oxygen demand in a closed respirometer. {译} 塑料 暴露于海水中塑料材料需氧生物分解的测定 第2部分：采用测定密闭呼吸计内需氧量的方法 |
China National Standards closed |
 English PDF |
| GB/T 43405-2023 |
Enclosed trucks - technical requirements and test methods for cargo isolation devices and securing points {译} 封闭式货车 货物隔离装置及系固点技术要求和试验方法 |
China National Standards closed |
English PDF |
| GB/T 7190.3-2019 |
Mechanical draft cooling tower Part 3: closed cooling tower "Modification No. 1" {译} 机械通风冷却塔 第3部分：闭式冷却塔《第1号修改单》 |
China National Standards closed |
English PDF |
| GB/T 43119-2023 |
Technical requirements for the construction of closed test sites for autonomous driving {译} 自动驾驶封闭测试场地建设技术要求 |
China National Standards closed |
English PDF |
| GB/T 43010-2023 |
Enclosed dry cleaning machines Definition and examination of machine characteristics {译} 封闭式干洗机 定义和机器特性的检验 |
China National Standards closed |
English PDF |
| GB/T 25922-2023 |
Measurement of fluid flow in closed pipes Flow measurement using a vortex flowmeter installed in a circular cross-section pipe filled with fluid {译} 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 |
China National Standards closed |
English PDF |
| GB/T 18659-2023 |
Measurement of Fluid Flow in closed Pipes Electromagnetic Flowmeter User Guide {译} 封闭管道中流体流量的测量 电磁流量计使用指南 |
China National Standards closed |
English PDF |
| GB/T 28782.2-2023 |
Hydraulic transmissions - Measurement technology Part 2: Measurement of mean steady-state pressure in closed circuits {译} 液压传动 测量技术 第2部分：密闭回路中平均稳态压力的测量 |
China National Standards closed |
English PDF |
| GB/T 42517.1-2023 |
Intelligent transportation system - Electronic road map data model and representation for intelligent driving - Part 1: closed roads {译} 智能运输系统 智能驾驶电子道路图数据模型与表达 第1部分：封闭道路 |
China National Standards closed |
English PDF |
| GB/T 39545.4-2023 |
Design and selection of components for enclosed gear drives - Part 4: Balance classes for flexible couplings {译} 闭式齿轮传动装置的零部件设计和选择 第4部分：挠性联轴器平衡等级 |
China National Standards closed |
English PDF |
| GB/T 42321-2023 |
Additional requirements for 3.6 kV to 40.5 kV pole-mounted metal-enclosed switchgear with internal arc category {译} 具有内部电弧类别的3.6 kV～40.5 kV柱上安装金属封闭开关设备的附加要求 |
China National Standards closed |
English PDF |
| GB/T 42333-2023 |
Determination of iodine content in soil and water system sediments Ammonia closed solution-inductively coupled plasma mass spectrometry {译} 土壤、水系沉积物 碘含量的测定 氨水封闭溶解-电感耦合等离子体质谱法 |
China National Standards closed |
English PDF |
| GB/T 39545.1-2022 |
Design and selection of components for enclosed gear drives - Part 1: Common components {译} 闭式齿轮传动装置的零部件设计和选择 第1部分：通用零部件 |
China National Standards closed |
English PDF |
| GB/T 41940-2022 |
Rubber - Determination of Viscosity and Stress Relaxation with a Rotorless closed Shear Rheometer {译} 橡胶 用无转子密闭剪切流变仪测定黏度和应力松弛 |
China National Standards closed |
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 closed |
English PDF |
| GB/T 40611-2021 |
Plastics—Determination of aerobic biodegradation of non-floating plastic materials in a seawater/ sandy sediment interface—Method by measuring the oxygen demand in closed respirometer 塑料 海水沙质沉积物界面非漂浮塑料材料最终需氧生物分解能力的测定 通过测定密闭呼吸计内耗氧量的方法 |
China National Standards closed |
English PDF |
| GB/T 40531.1-2021 |
Ships and marine technology—Specifications for gas detectors intended for use on board ships—Part 1:Portable gas detectors for atmosphere testing of enclosed spaces 船舶与海上技术 船用气体探测器规范 第1部分：围蔽处所的便携式气体探测器 |
China National Standards closed |
English PDF |
| GB/T 29076-2021 |
Execution requirements of quality problem closed loop for aerospace product 航天产品质量问题归零实施要求 |
China National Standards closed |
English PDF |
| GB/T 20728-2021 |
Measurement of fluid flow in closed conduits—Guidance to the selection, installation and use of Coriolis flowmeters 封闭管道中流体流量的测量 科里奥利流量计的选型、安装和使用指南 |
China National Standards closed |
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 closed |
English PDF |
| GB/T 261-2021 |
Determination of flash point—Pensky-Martens closed cup method 闪点的测定 宾斯基-马丁闭口杯法 |
China National Standards closed |
English PDF |
| GB/T 38912-2020 |
Test method for closed-end burst of zirconium tubes at room temperature 锆管室温闭端爆破试验方法 |
China National Standards closed |
English PDF |
| GB/T 30428.8-2020 |
Information system for digitized supervision and management of city—Part 8: Register, treatment and closed for supervision cases 数字化城市管理信息系统 第8部分：立案、处置和结案 |
China National Standards closed |
English PDF |
| GB/T 38658-2020 |
Guidance for the extension of validity of type tests of AC metal enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV 3.6 kV～40.5 kV交流金属封闭开关设备和控制设备型式试验有效性的延伸导则 |
China National Standards closed |
English PDF |
| GB/T 3906-2020 |
Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV 3.6 kV～40.5 kV交流金属封闭开关设备和控制设备 |
China National Standards closed |
English PDF |
| GB/T 39545.3-2020 |
Design and selection of components for enclosed gear drives—Part 3: Shaft-to-hub juncture with keyless fits 闭式齿轮传动装置的零部件设计和选择 第3部分：轴和轮毂的无键配合连接 |
China National Standards closed |
English PDF |
| GB/T 7674-2020 |
Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above 额定电压72.5kV及以上气体绝缘金属封闭开关设备 |
China National Standards closed |
English PDF |
| GB/T 39287-2020 |
closed expansion vessels 闭式膨胀罐 |
China National Standards closed |
English PDF |
| GB/T 38425.2-2019 |
Textile machinery and accessories—Flat steel healds with closed end loops—Part 2：Dimensions of healds manufactured of hardened strip steel 纺织机械与附件 闭口综耳钢片综 第2部分：淬火钢带钢片综的尺寸 |
China National Standards closed |
English PDF |
| GB/T 7190.3-2019 |
Mechanical draft cooling towers—Part 3：closed circuit cooling towers 机械通风冷却塔 第3部分：闭式冷却塔 |
China National Standards closed |
English PDF |
| GB/T 24835-2018 |
Regulation of operation and maintenance for 1100kV gas-insulated metal-enclosed switchgear 1100kV气体绝缘金属封闭开关设备运行维护规程 |
China National Standards closed |
English PDF |
| GB/T 35051-2018 |
Grade for closed process water circuit in coal preparation plant 选煤厂洗水闭路循环等级 |
China National Standards closed |
English PDF |
| GB/T 24836-2018 |
1100kV gas-insulated metal-enclosed switchgear 1100kV气体绝缘金属封闭开关设备 |
China National Standards closed |
English PDF |
| GB/T 36253-2018 |
Inserts for aviation, self-locking with MJ threads, closed type, in aluminium alloy 航空用MJ螺纹铝合金盲孔自锁镶嵌件 |
China National Standards closed |
English PDF |
| GB/T 36663-2018 |
Ships and marine technology—Ship’s mooring and towing fittings—closed chocks 船舶和海上技术 船舶系泊和拖带设备 闭式导缆孔 |
China National Standards closed |
English PDF |
| GB/T 34901-2017 |
Shape closed-loop control system for cold rolling strip 冷轧带材板形闭环测控系统 |
China National Standards closed |
English PDF |
| GB/T 34041.1-2017 |
Measurement of fluid flow in closed conduits—Ultrasonic meters for gas—Part 1: Meters for custody transfer and allocation measurement 封闭管道中流体流量的测量 气体超声流量计 第1部分:贸易交接和分输计量用气体超声流量计 |
China National Standards closed |
English PDF |
| GB/T 34041.2-2017 |
Measurement of fluid flow in closed conduits—Ultrasonic meters for gas—Part 2: Meters for industrial applications 封闭管道中流体流量的测量 气体超声流量计 第2部分：工业测量用气体超声流量计 |
China National Standards closed |
English PDF |
| GB/T 22381-2017 |
Cable connections between gas-insulated metal-enclosed switchgear for rated voltages equal to and above 72.5kV and fluid-filled and extruded insulation power cables—Fluid-filled and dry type cable-terminations 额定电压72.5kV及以上气体绝缘金属封闭开关设备与充流体及挤包绝缘电力电缆的连接 充流体及干式电缆终端 |
China National Standards closed |
English PDF |
| GB/T 22382-2017 |
Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above 额定电压72.5 kV 及以上气体绝缘金属封闭开关设备与电力变压器之间的直接连接 |
China National Standards closed |
English PDF |
| GB/T 35138-2017 |
Measurement of fluid flow in closed conduits—Ultrasonic transit-time meters for liquid 封闭管道中流体流量的测量 渡越时间法液体超声流量计 |
China National Standards closed |
English PDF |
| GB/T 35685.1-2017 |
Low-voltage switchgear and controlgear enclosed equipment—Part 1:Enclosed switch-disconnectors to provide isolation during repair and maintenance work 低压封闭式开关设备和控制设备 第1部分：在维修和维护工作中提供隔离功能的封闭式隔离开关 |
China National Standards closed |
English PDF |
| GB/T 33346-2016 |
Busbar trunking systems (closed insulated busbar) for wind power 风力发电导电轨（密集型母线槽） |
China National Standards closed |
English PDF |
| GB/T 18859-2016 |
Enclosed low-voltage switchgear and controlgear assemblies—Guide for testing under conditions of arcing due to internal fault 封闭式低压成套开关设备和控制设备 在内部故障引起电弧情况下的试验导则 |
China National Standards closed |
English PDF |
| GB/T 32973-2016 |
Technical specification for hot charging and hot delivery of semi-closed arc furnace 半封闭矿热炉炉料热装热送技术规范 |
China National Standards closed |
English PDF |
| GB/T 9989.5-2015 |
Vitreous and porcelain enamels—Determination of resistance to chemical corrosion—Part 5: Determination of resistance to chemical corrosion in closed systems 搪瓷耐化学侵蚀的测定 第5部分：在封闭系统中耐化学侵蚀的测定 |
China National Standards closed |
English PDF |
| GB/T 31440-2015 |
Contactless IC card receiver and distributor for closed toll 封闭式收费用非接触式IC卡收发卡机 |
China National Standards closed |
English PDF |
| GB/T 30665-2014 |
Chemicals―Biodegradability in seawater―closed bottle method 化学品 海水中的生物降解性 密闭瓶法 |
China National Standards closed |
English PDF |
| GB/T 30243-2013 |
Measurement of fluid flow in closed conduits—Specifications for V-cone pressure differential flow measuring device 封闭管道中流体流量的测量 V形内锥流量测量节流装置 |
China National Standards closed |
English PDF |
| GB/T 28782.2-2012 |
Hydraulic fluid power - Measurement techniques - Part 2: Measurement of average steady-state pressure in a closed conduit 液压传动测量技术 第2部分：密闭回路中平均稳态压力的测量 |
China National Standards closed |
English PDF |
| GB/T 28428-2012 |
27.5kV and 2×27.5kV AC metal-enclosed switchgear and controlgear for electrification railway 电气化铁路27.5kV和2×27.5kV交流金属封闭开关设备和控制设备 |
China National Standards closed |
English PDF |
| GB/T 27848-2011 |
Liquid asphalt and derivatives - Determination of flash point - Abel closed tester 液态沥青和稀释沥青 闪点测定 阿贝尔闭口杯法 |
China National Standards closed |
English PDF |
| GB/T 27847-2011 |
Petroleum products - Determination of flash point - Abel-Pensky closed tester 石油产品 闪点测定 阿贝尔-宾斯基闭口杯法 |
China National Standards closed |
English PDF |
| GB 5903-2011 |
Gear oils for industrial enclosed gear system 工业闭式齿轮油 |
China National Standards closed |
English PDF |
| GB 50198-2011 |
Technical code for project of civil closed circuit monitoring television system 民用闭路监视电视系统工程技术规范 |
China National Standards closed |
English PDF |
| GB/T 26801-2011 |
Fluid flow in closed conduits - Connections for pressure signal transmissions between primary and secondary elements 封闭管道中流体流量的测量 一次装置和二次装置之间压力信号传送的连接法 |
China National Standards closed |
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 closed |
English PDF |
| GB/T 25482-2010 |
Automatic closed flashpoint analyzer 自动闭口闪点仪 |
China National Standards closed |
English PDF |
| GB/Z 24836-2009 |
Specification for 1100kV gas-insulated metal-enclosed switchgear 1100kV气体绝缘金属封闭开关设备技术规范 |
China National Standards closed |
English PDF |
| GB/Z 24835-2009 |
Regulation of operation and maintenance for 1000kV gas-insulated metal-enclosed switchgear 1000kV气体绝缘金属封闭开关设备运行及维护规程 |
China National Standards closed |
English PDF |
| GB/T 24339.1-2009 |
Railway applications - Communication,signalling and processing systems - Part 1: Safety-related communication in closed transmission systems 轨道交通 通信、信号和处理系统 第1部分：封闭式传输系统中的安全相关通信 |
China National Standards closed |
English PDF |
| GB/T 24275-2009 |
Low-voltage fixed connection enclosed switchgear and controlgear assemblies 低压固定封闭式成套开关设备和控制设备 |
China National Standards closed |
English PDF |
| GB 23394-2009 |
Self-contained closed-circuit breathing apparatus of compressed oxygen 自给闭路式压缩氧气呼吸器 |
China National Standards closed |
English PDF |
| GB/T 22382-2008 |
Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltage of 72.5 kV and above 额定电压 72.5kV 及以上气体绝缘金属封闭开关设备与电力变压器之间的直接连接 |
China National Standards closed |
English PDF |
| GB/T 22381-2008 |
Cable connections for gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above - Fluid-filled and extruded insulation power cables - Fluid-filled and dry type cable-terminations 额定电压 72.5kV 及以上气体绝缘金属封闭开关设备与充流体及挤包绝缘电力电缆的连接 充流体及干式电缆终端 |
China National Standards closed |
English PDF |
| GB 7674-2008 |
Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above 额定电压72.5kV及以上气体绝缘金属封闭开关设备 |
China National Standards closed |
English PDF |
| GB/T 261-2008 |
Determination of flash point - Pensky-Martens closed cup method 闪点的测定 宾斯基-马丁闭口杯法 |
China National Standards closed |
English PDF |
| GB/T 21929-2008 |
Test method for flash point by tag closed cup tester 泰格闭口杯闪点测定法 |
China National Standards closed |
English PDF |
| GB/T 5208-2008 |
Determination of flash point - Rapid equilibrium closed cup method 闪点的测定 快速平衡闭杯法 |
China National Standards closed |
English PDF |
| GB/T 21831-2008 |
Testing of chemicals - Ready biodegradability - closed bottle test 化学品 快速生物降解性 密闭瓶法试验 |
China National Standards closed |
English PDF |
| GB/T 21792-2008 |
Determination of flash/ no flash - closed cup equilibrium method 闪燃和非闪燃测定 闭杯平衡法 |
China National Standards closed |
English PDF |
| GB/T 21790-2008 |
Determination of flash/ no flash - Rapid equilibrium closed cup method 闪燃和非闪燃测定 快速平衡闭杯法 |
China National Standards closed |
English PDF |
| GB/T 21789-2008 |
Petroleum products and other liquids - Determination of flash point -Abel closed cup method 石油产品和其他液体闪点的测定 阿贝尔闭口杯法 |
China National Standards closed |
English PDF |
| GB/T 21775-2008 |
Determination of flash point - closed cup equilibrium method 闪点的测定 闭杯平衡法 |
China National Standards closed |
English PDF |
| GB/T 21631-2008 |
Dangerous goods - Test method of enclosed space ignition for aerosols 危险品 喷雾剂封闭空间点燃试验方法 |
China National Standards closed |
English PDF |
| GB/T 21615-2008 |
Dangerous goods - Test method for determination of closed cup flash point of flammable liquids 危险品 易燃液体闭杯闪点试验方法 |
China National Standards closed |
English PDF |
| GB/T 21497-2008 |
Animal and vegatable fats and oils - Flashpoint limit test using - Pensky-Martens closed cup flash tester 动植物油脂 定温闪燃测试 彭斯克-马丁闭口杯法 |
China National Standards closed |
English PDF |
| GB/T 10799-2008 |
Rigid cellular plastics - Determination of the volume percentage of open cells and of closed cells 硬质泡沫塑料 开孔和闭孔体积百分率的测定 |
China National Standards closed |
English PDF |
| GB/T 778.3-2007 |
Measurement of water flow in fully charged closed conduits - Meters for cold potable water and hot water - Part 3: Test methods and equipment 封闭满管道中水流量的测量 饮用冷水水表和热水水表 第3部分：试验方法和试验设备 |
China National Standards closed |
English PDF |
| GB/T 778.2-2007 |
Measurement of water flow in fully charged closed conduits - Meters for cold potable water and hot water - Part 2: Installation requirements 封闭满管道中水流量的测量 饮用冷水水表和热水水表 第2部分：安装要求 |
China National Standards closed |
English PDF |
| GB/T 778.1-2007 |
Measurement of water flow in fully charged closed conduits - Meters for cold potable water and hot water - Part 1: Specifications 封闭满管道中水流量的测量 饮用冷水水表和热水水表 第1部分：规范 |
China National Standards closed |
English PDF |
| GB/T 20842-2007 |
Technical specification of enclosed lifeboats 封闭救生艇技术条件 |
China National Standards closed |
English PDF |
| GB/T 20729-2006 |
Measurement of conductive liquid flow in closed conduits - Flanged electromagnetic flowmeters - Overall length 封闭管道中导电液体流量的测量 法兰安装电磁流量计 总长度 |
China National Standards closed |
English PDF |
| GB/T 20728-2006 |
Measurement of fluid flow in closed conduits - Guidance to the selection, installation and use of Coriolis meters 封闭管道中流体流量的测量 科里奥利流量计的选型、安装和使用指南 |
China National Standards closed |
English PDF |
| GB/T 20727-2006 |
Measurement of fluid flow in closed conduits - Thermal mass flowmeters 封闭管道中流体流量的测量 热式质量流量计 |
China National Standards closed |
English PDF |
| GB 3906-2006 |
Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV 3.6kV～40.5kV交流金属封闭开关设备和控制设备 |
China National Standards closed |
English PDF |
| GB/T 19687-2005 |
Determination of the long-term change in thermal resistance of closed-cell plastics(accelerated laboratory test methods) 闭孔塑料长期热阻变化的测定 实验室加速测试方法 |
China National Standards closed |
English PDF |
| GB/T 19553-2004 |
Textile machinery and accessories--Heald carrying rods for healds with closed “O”-shaped end loops 纺织机械与附件 闭口“O”型综耳综丝用的穿综杆 |
China National Standards closed |
English PDF |
| GB/T 19552-2004 |
Textile machinery and accessories--Flat healds with closed end loops--Dimensions 纺织机械与附件 闭口综耳钢片综 尺寸 |
China National Standards closed |
English PDF |
| GB/T 12616.1-2004 |
closed end blind rivets with break pull mandrel and countersunk head--Property class 11 封闭型沉头抽芯铆钉 11级 |
China National Standards closed |
English PDF |
| GB/T 12615.4-2004 |
closed end blind rivets with break pull mandrel and protruding head--Property class 51 封闭型平圆头抽芯铆钉 51级 |
China National Standards closed |
English PDF |
| GB/T 12615.3-2004 |
closed end blind rivets with break pull mandrel and protruding head--Property class 06 封闭型平圆头抽芯铆钉 06级 |
China National Standards closed |
English PDF |
| GB/T 12615.2-2004 |
closed end blind rivets with break pull mandrel and protruding head--Property class 30 封闭型平圆头抽芯铆钉 30级 |
China National Standards closed |
English PDF |
| GB/T 12615.1-2004 |
closed end blind rivets with break pull mandrel and protruding head--Property class 11 封闭型平圆头抽芯铆钉 11级 |
China National Standards closed |
English PDF |
| GB/Z 19414-2003 |
Enclosed gear drives for industrial applications 工业用闭式齿轮传动装置 |
China National Standards closed |
English PDF |
| GB/T 19353-2003 |
Vitreous and porcelain enamels--Corrosion tests in closed systems 搪玻璃釉 密闭系统中的腐蚀试验 |
China National Standards closed |
English PDF |
| GB/T 19276.1-2003 |
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by measuring the oxygen demand in a closed respirometer 水性培养液中材料最终需氧生物分解能力的测定 采用测定密闭呼吸计中需氧量的方法 |
China National Standards closed |
English PDF |
| GB/T 18940-2003 |
Measurement of gas flow in closedconduits--Turbine meters 封闭管道中气体流量的测量 涡轮流量计 |
China National Standards closed |
English PDF |
| GB/Z 18859-2002 |
Enclosed low-voltage switchgaer and controlgaer Assemblies--Guide for testing under conditions of arcing due to internal fault 封闭式低压成套开关设备和控制设备在内部故障引起电弧情况下的试验导则 |
China National Standards closed |
English PDF |
| GB/T 18660-2002 |
Measurement of conductive liquid flow in closed conduits--Method using electromagnetic flowmeters 封闭管道中导电液体流量的测量 电磁流量计的使用方法 |
China National Standards closed |
English PDF |
| GB/T 18659-2002 |
Measurement of fluid flow in closed conduits--Methods of evaluating the performance of electromagnetic flow-meters for liquids 封闭管道中导电液体流量的测量 电磁流量计的性能评定方法 |
China National Standards closed |
English PDF |
| GB/T 8349-2000 |
Metal-enclosed bus 金属封闭母线 |
China National Standards closed |
English PDF |
| GB/T 17613.1-1998 |
Measurement of liquid flow in closed conduits by weighing method--Procedures for checking installations--Part 1:Static weighing systems 用称重法测量封闭管道中的液体流量 装置的检验程序 第1部分:静态称重系统 |
China National Standards closed |
English PDF |
| GB/T 17612-1998 |
Measurement of liquid flow in closed conduits--Weighing method 封闭管道中液体流量的测量 称重法 |
China National Standards closed |
English PDF |
| GB/T 17611-1998 |
Measurement of fluid flow in closed conduits--Vocabulary and symbols 封闭管道中流体流量的测量 术语和符号 |
China National Standards closed |
English PDF |
| GB 16993-1997 |
Safety regulations for working under hazardous condition of the oxygen deficiency in the cargo holds and closed compartments of ships 防止船舶货舱及封闭舱缺氧危险作业安全规程 |
China National Standards closed |
English PDF |
| GB 11657-1989 |
Health protection zone standardfor copper smeltery (closed blast furnace type) 铜冶炼厂(密闭鼓风炉型)卫生防护距离标准 |
China National Standards closed |
English PDF |
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