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Standard Code | Standard Title | Standard Class | Order |
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GB/T 11066.12-2024 |
Methods for chemical analysis of gold - Part 12: - Determination of silver, copper, iron, lead, bismuth, antimony, magnesium, nickel, manganese, palladium, chromium, platinum, rhodium, titanium, zinc, arsenic, tin, silicon, cobalt, calcium, potassium, lithium, sodium, tellurium, vanadium, zirconium, cadmium, molybdenum, rhenium, and aluminum content - Inductively coupled plasma atomic emission spectrometry 金化学分析方法-第12-部分:-银、铜、铁、铅、铋、锑、镁、镍、锰、钯、铬、铂、铑、钛、锌、砷、锡、硅、钴、钙、钾、锂、钠、碲、钒、锆、镉、钼、铼、铝含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 11091-2024 |
copper foil for cable 电缆用铜带箔材 |
China National Standards copper |
English PDF |
GB/T 4103.18-2024 |
Methods for chemical analysis of lead and lead alloys - Part 18: Determination of silver, copper, bismuth, arsenic, antimony, tin, zinc, iron, cadmium, nickel, magnesium, aluminum, calcium, selenium and tellurium content - Inductively coupled plasma mass spectrometry 铅及铅合金化学分析方法-第18部分:银、铜、铋、砷、锑、锡、锌、铁、镉、镍、镁、铝、钙、硒和碲含量的测定-电感耦合等离子体质谱法 |
China National Standards copper |
English PDF |
GB/T 42513.7-2024 |
Chemical analysis methods for nickel alloys-Part 7: Determination of cobalt, chromium, copper, iron and manganese content-Flame atomic absorption spectrometry 镍合金化学分析方法-第7部分:钴、铬、铜、铁和锰含量的测定-火焰原子吸收光谱法 |
China National Standards copper |
English PDF |
GB/T 44003-2024 |
Mechanical Property Measurement - Test Method for Delamination Strength of REBCO Coated Conductors (copper Plating) 力学性能测量-REBCO涂层导体(镀铜)脱层强度测试方法 |
China National Standards copper |
English PDF |
GB/T 4701.13-2024 |
Ferrotitanium - Determination of silicon, manganese, phosphorus, chromium, aluminum, magnesium, copper, vanadium and nickel content - Inductively coupled plasma atomic emission spectrometry 钛铁-硅、锰、磷、铬、铝、镁、铜、钒、镍含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 5121.8-2024 |
Chemical analysis methods for copper and copper alloys - Part 8: Determination of oxygen, nitrogen and hydrogen content 铜及铜合金化学分析方法-第8部分:氧、氮、氢含量的测定 |
China National Standards copper |
English PDF |
GB/T 3953-2024 |
Electrical round copper wire 电工圆铜线 |
China National Standards copper |
English PDF |
GB/T 43603.2-2024 |
Chemical analysis methods for nickel-platinum target alloys - Part 2: Determination of magnesium, aluminum, titanium, vanadium, chromium, manganese, iron, cobalt, copper, zinc, zirconium, silver, palladium, tin, samarium, lead, silicon content - inductively coupled plasma mass spectrometry - 镍铂靶材合金化学分析方法-第2部分:镁、铝、钛、钒、铬、锰、铁、钴、铜、锌、锆、银、钯、锡、钐、铅、硅含量的测定-电感耦合等离子体质谱法- |
China National Standards copper |
English PDF |
GB/T 43753.2-2024 |
Chemical analysis methods for precious metal alloy electroplating wastewater-Part 2: Determination of zinc, manganese, chromium, cadmium, lead, iron, aluminum, nickel, copper and beryllium content-Inductively coupled plasma atomic emission spectrometry 贵金属合金电镀废水化学分析方法-第2部分:锌、锰、铬、镉、铅、铁、铝、镍、铜、铍含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 43801-2024 |
Test methods for relative dielectric constant and loss tangent of copper-clad laminates in the microwave band - Separate dielectric resonator method 微波频段覆铜箔层压板相对介电常数和损耗正切值测试方法-分离介质谐振器法 |
China National Standards copper |
English PDF |
GB/T 43607-2023 |
Palladium ingot analysis method Determination of silver, aluminum, gold, bismuth, chromium, copper, iron, iridium, magnesium, manganese, nickel, lead, platinum, rhodium, ruthenium, silicon, tin, zinc content Spark discharge atomic emission spectrometry 钯锭分析方法 银、铝、金、铋、铬、铜、铁、铱、镁、锰、镍、铅、铂、铑、钌、硅、锡、锌含量测定 火花放电原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 26330-2023 |
Silver, silver alloy/copper, copper alloy composite strip 银、银合金/铜、铜合金复合带材 |
China National Standards copper |
English PDF |
GB/T 43363-2023 |
Determination of form distribution of 12 elements including copper, zinc, cadmium, lead and chromium in waste chemicals. Continuous extraction method 废弃化学品中铜、锌、镉、铅、铬等12种元素形态分布的测定 连续提取法 |
China National Standards copper |
English PDF |
GB/T 43354-2023 |
Plane bending fatigue test method for copper alloy elastic strips 铜合金弹性带材平面弯曲疲劳试验方法 |
China National Standards copper |
English PDF |
GB/T 34497-2023 |
copper and copper alloy foil materials for terminal connectors 端子连接器用铜及铜合金带箔材 |
China National Standards copper |
English PDF |
GB/T 3310-2023 |
Ultrasonic testing method for copper and copper alloy rods 铜及铜合金棒材超声检测方法 |
China National Standards copper |
English PDF |
GB/T 3260.11-2023 |
Methods for chemical analysis of tin Part 11: Determination of copper, iron, bismuth, lead, antimony, arsenic, aluminum, zinc, cadmium, silver, nickel and cobalt content - Inductively coupled plasma atomic emission spectrometry 锡化学分析方法 第11部分:铜、铁、铋、铅、锑、砷、铝、锌、镉、银、镍和钴含量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 43098.2-2023 |
Analysis methods for water treatment agents Part 2: Determination of arsenic, mercury, cadmium, chromium, lead, nickel and copper content Inductively coupled plasma mass spectrometry (ICP-MS) 水处理剂分析方法 第2部分:砷、汞、镉、铬、铅、镍、铜含量的测定 电感耦合等离子体质谱法(ICP-MS) |
China National Standards copper |
English PDF |
GB/T 43321-2023 |
Recommended process specifications for brazing copper and copper alloys 铜及铜合金钎焊推荐工艺规范 |
China National Standards copper |
English PDF |
GB/T 9460-2023 |
copper and copper alloy welding wire 铜及铜合金焊丝 |
China National Standards copper |
English PDF |
GB 1903.61-2023 |
National Food Safety Standard Food Nutritional Enhancer copper Carbonate 食品安全国家标准 食品营养强化剂 碳酸铜 |
China National Standards copper |
English PDF |
GB 1886.361-2022 |
National Food Safety Standard Food Additive copper Chlorophyll 食品安全国家标准 食品添加剂 叶绿素铜 |
China National Standards copper |
English PDF |
GB 23200.117-2019 |
National food safety standards Determination of copper quinoline residues in plant-derived foods High performance liquid chromatography 食品安全国家标准 植物源性食品中喹啉铜残留量的测定 高效液相色谱法 |
China National Standards copper |
English PDF |
GB/T 12971.1-2023 |
Contact wires for electric traction Part 1: copper and copper alloy contact wires 电力牵引用接触线 第1部分:铜及铜合金接触线 |
China National Standards copper |
English PDF |
GB/T 42794-2023 |
Nickel iron - Determination of carbon, sulfur, silicon, phosphorus, nickel, cobalt, chromium and copper content - Spark source atomic emission spectrometry 镍铁 碳、硫、硅、磷、镍、钴、铬和铜含量的测定 火花源原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 42915-2023 |
Specification for identification of copper concentrates and main copper-containing materials 铜精矿及主要含铜物料鉴别规范 |
China National Standards copper |
English PDF |
GB/T 42654-2023 |
Test methods for seawater erosion corrosion of copper and copper alloys 铜及铜合金海水冲刷腐蚀试验方法 |
China National Standards copper |
English PDF |
GB/T 27683-2023 |
copper and copper alloy cutting chips and recycling specifications 铜及铜合金切削屑料及其回收规范 |
China National Standards copper |
English PDF |
GB/T 23609-2023 |
copper alloy seamless pipes for seawater desalination equipment 海水淡化装置用铜合金无缝管 |
China National Standards copper |
English PDF |
GB/T 5246-2023 |
electrolytic copper powder 电解铜粉 |
China National Standards copper |
English PDF |
GB/T 3884.12-2023 |
Methods for chemical analysis of copper concentrates Part 12: Determination of fluorine and chlorine content Ion chromatography and potentiometric titration 铜精矿化学分析方法 第12部分:氟和氯含量的测定 离子色谱法和电位滴定法 |
China National Standards copper |
English PDF |
GB/T 3114-2023 |
copper and copper alloy flat wire 铜及铜合金扁线 |
China National Standards copper |
English PDF |
GB 21350-2023 |
copper and Copper Alloy Processed Materials Energy Consumption Quota per Unit Product 铜及铜合金加工材单位产品能源消耗限额 |
China National Standards copper |
English PDF |
GB/T 38470-2023 |
Recycled copper Alloy Raw Materials 再生铜合金原料 |
China National Standards copper |
English PDF |
GB/T 38471-2023 |
Secondary copper Raw Materials 再生铜原料 |
China National Standards copper |
English PDF |
GB/T 42515-2023 |
Metal powders - Determination of acid-insoluble content in iron, copper, tin and bronze powders 金属粉末 铁、铜、锡和青铜粉末中酸不溶物含量的测定 |
China National Standards copper |
English PDF |
GB/T 42511-2023 |
Cemented carbide - Determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc in cobalt powder - Flame atomic absorption spectrometry 硬质合金 钴粉中钙、铜、铁、钾、镁、锰、钠、镍和锌含量的测定 火焰原子吸收光谱法 |
China National Standards copper |
English PDF |
GB/T 20509-2023 |
copper and copper alloy wire blanks for electric locomotive contact materials 电力机车接触材料用铜及铜合金线坯 |
China National Standards copper |
English PDF |
GB/T 27671-2023 |
Conductive copper Profiles 导电用铜型材 |
China National Standards copper |
English PDF |
GB/T 20078-2023 |
copper and Copper Alloys Forgings 铜和铜合金 锻件 |
China National Standards copper |
English PDF |
GB/T 8152.17-2023 |
Methods for chemical analysis of lead concentrates - Part 17: Determination of aluminum, magnesium, iron, copper, zinc, cadmium, arsenic, antimony, bismuth, calcium content - Inductively coupled plasma atomic emission spectrometry 铅精矿化学分析方法 第17部分:铝、镁、铁、铜、锌、镉、砷、锑、铋、钙含量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 42512-2023 |
copper alloy sheathed seamless coil 铜合金护套无缝盘管 |
China National Standards copper |
English PDF |
GB/T 15116-2023 |
Die-casting copper alloy and copper alloy die-casting parts 压铸铜合金及铜合金压铸件 |
China National Standards copper |
English PDF |
GB/T 42630-2023 |
Method for chemical phase analysis of copper-nickel sulfide ores—Determination of nickel and cobalt content in six mineral phases 铜镍硫化物矿石化学物相分析方法 6 种矿物相中镍和钴含量的测定 |
China National Standards copper |
English PDF |
GB/T 8464-2023 |
Iron, copper and stainless steel threaded connection valves 铁制、铜制和不锈钢制螺纹连接阀门 |
China National Standards copper |
English PDF |
GB/T 7717.16-2022 |
Acrylonitrile for industrial use - Part 16: Determination of iron and copper content - Graphite furnace atomic absorption spectrometry and inductively coupled plasma mass spectrometry 工业用丙烯腈 第16部分:铁、铜含量的测定 石墨炉原子吸收光谱法和电感耦合等离子体质谱法 |
China National Standards copper |
English PDF |
GB/T 41658-2022 |
Metal powders (excluding cemented carbide) copper-based impregnated powder test method 金属粉末(不包括硬质合金) 铜基浸渗粉检验方法 |
China National Standards copper |
English PDF |
GB/T 4910-2022 |
Tinned round copper wire 镀锡圆铜线 |
China National Standards copper |
English PDF |
GB/T 41523-2022 |
Paper, board and pulp - Determination of total magnesium, calcium, manganese, iron and copper 纸、纸板和纸浆 镁、钙、锰、铁及铜总量的测定 |
China National Standards copper |
English PDF |
GB/T 30586-2022 |
copper clad aluminium flat bars 铜包铝扁棒 |
China National Standards copper |
English PDF |
GB/T 5231-2022 |
Designation and chemical composition of wrought copper and copper alloys 加工铜及铜合金牌号和化学成分 |
China National Standards copper |
English PDF |
GB/T 4725-2022 |
Epoxide woven glass fabric copper-clad laminated sheets for printed circuits 印制电路用覆铜箔环氧玻纤布层压板 |
China National Standards copper |
English PDF |
GB/T 41330-2022 |
Analysis method of boiler water and cooling water Determination of trace copper, iron, sodium, calcium, magnesium content Inductively coupled plasma mass spectrometry (ICP-MS) method 锅炉用水和冷却水分析方法 痕量铜、铁、钠、钙、镁含量的测定 电感耦合等离子体质谱(ICP-MS)法 |
China National Standards copper |
English PDF |
GB/T 42273-2022 |
Zirconium compound chemical analysis method Calcium, hafnium, titanium, sodium, iron, chromium, cadmium, zinc, manganese, copper, nickel, lead content determination Inductively coupled plasma atomic emission spectrometry 锆化合物化学分析方法 钙、铪、钛、钠、铁、铬、镉、锌、锰、铜、镍、铅含量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 42175-2022 |
Determination of copper, lead, zinc, cadmium and chromium in drilling mud and drilling cuttings for offshore oil exploration and development Microwave digestion-inductively coupled plasma mass spectrometry 海洋石油勘探开发钻井泥浆和钻屑中铜、铅、锌、镉、铬的测定 微波消解-电感耦合等离子体质谱法 |
China National Standards copper |
English PDF |
GB/T 14048.22-2022 |
Low-voltage switchgear and controlgear - Part 7-4: Auxiliary devices - PCB terminal blocks for copper conductors 低压开关设备和控制设备 第7-4部分:辅助器件 铜导体的PCB接线端子排 |
China National Standards copper |
English PDF |
GB/T 9797-2022 |
Metallic and other inorganic coatings Nickel, nickel + chromium, copper + nickel and copper + nickel + chromium plating 金属及其他无机覆盖层 镍、镍+铬、铜+镍和铜+镍+铬电镀层 |
China National Standards copper |
English PDF |
GB/T 41882-2022 |
copper and Copper Alloy Powders for Additive Manufacturing 增材制造用铜及铜合金粉 |
China National Standards copper |
English PDF |
GB/T 41707-2022 |
copper-based arsenic removal agent at room temperature 常温铜系脱砷剂 |
China National Standards copper |
English PDF |
GB/T 41744-2022 |
Substrate glass for copper indium gallium selenide thin film solar cells 铜铟镓硒薄膜太阳能电池用基板玻璃 |
China National Standards copper |
English PDF |
GB/T 42043-2022 |
Aerospace - Aluminum alloy and copper-clad aluminum conductors for electrical wires - General performance requirements 航空航天 电线的铝合金和铜包铝导体 通用性能要求 |
China National Standards copper |
English PDF |
GB/T 20899.4-2021 |
Methods for chemical analysis of gold ores—Part 4: Determination of copper content 金矿石化学分析方法 第4部分:铜量的测定 |
China National Standards copper |
English PDF |
GB/T 15901-2021 |
Chemical reagent—copper(Ⅱ) chloride dihydrate 化学试剂 二水合氯化铜(氯化铜) |
China National Standards copper |
English PDF |
GB/T 14637-2021 |
Determination of copper,iron and zinc in industrial circulating cooling water and scale—Atomic absorption spectrometric method 工业循环冷却水及水垢中铜、铁、锌的测定 原子吸收光谱法 |
China National Standards copper |
English PDF |
GB/T 223.91-2021 |
Iron, steel and alloy—Determination of copper—2,2’-Biquinoline spectrophotometric method 钢铁及合金 铜含量的测定 2,2'-联喹啉分光光度法 |
China National Standards copper |
English PDF |
GB/T 40272-2021 |
Paper,board,pulps and cellulose nanomaterials—Determination of acid-soluble magnesium,calcium,manganese,iron,copper,sodium and potassium 纸、纸板、纸浆和纤维素纳米材料 酸溶镁、钙、锰、铁、铜、钠、钾的测定 |
China National Standards copper |
English PDF |
GB/T 40004-2021 |
copper-silver alloy rectangular wire 铜银合金扁线 |
China National Standards copper |
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 copper |
English PDF |
GB/T 39994-2021 |
Determination of six metal elements (iron, calcium, magnesium, zinc, titanium,copper) in polyolefin pipe system 聚烯烃管道中六种金属元素(铁、钙、镁、锌、钛、铜)的测定 |
China National Standards copper |
English PDF |
GB/T 11066.11-2021 |
Methods for chemical analysis of gold-Part 11:Determination of magnesium,chromium,manganese,iron,nickel copper,palladium,silver,tin,antimony,lead and bismuth contents-Inductively coupled plasma mass spectrometry 金化学分析方法 第11部分:镁、铬、锰、铁、镍、铜、钯、银、锡、锑、铅和铋含量的测定 电感耦合等离子体质谱法 |
China National Standards copper |
English PDF |
GB/T 39863-2021 |
Alumina ceramic substrate for copper clad laminate 覆铜板用氧化铝陶瓷基片 |
China National Standards copper |
English PDF |
GB/T 39778-2021 |
Technical specification for recycling and utilization of copper anode mud 铜阳极泥回收利用技术规范 |
China National Standards copper |
English PDF |
GB/T 14352.19-2021 |
Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 19: Determination of bismuth, cadmium, cobalt, copper, iron, lithium, nickel, phosphorus, lead, strontium, vanadium and zinc content -- Inductive-coupled plasma atomic emission spe 钨矿石、钼矿石化学分析方法 第19部分:铋、镉、钴、铜、铁、锂、镍、磷、铅、锶、钒和锌量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 5121.28-2021 |
Methods for chemical analysis of copper and copper alloys—Part 28:Determination of chromium,iron,manganese,cobalt,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrometry 铜及铜合金化学分析方法 第28部分:铬、铁、锰、钴、镍、锌、砷、硒、银、镉、锡、锑、碲、铅和铋含量的测定 电感耦合等离子体质谱法 |
China National Standards copper |
English PDF |
GB/T 3670-2021 |
Covered electordes for manual metal arc welding of copper and copper alloys 铜及铜合金焊条 |
China National Standards copper |
English PDF |
GB/T 38265.15-2021 |
Test methods for soft soldering fluxes—Part 15: copper corrosion test 软钎剂试验方法 第15部分:铜腐蚀试验 |
China National Standards copper |
English PDF |
GB/T 38265.5-2021 |
Test methods for soft soldering fluxes -- Part 5: copper mirror test 软钎剂试验方法 第5部分:铜镜试验 |
China National Standards copper |
English PDF |
GB/T 26301-2021 |
copper-nickel-zinc alloy strips and foils for shield 屏蔽用锌白铜带箔材 |
China National Standards copper |
English PDF |
GB/T 26024-2021 |
Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system 空调与制冷系统阀件用铜及铜合金无缝管 |
China National Standards copper |
English PDF |
GB 11236-2021 |
copper-bearing contraceptive intrauterine devices—Requirements and tests 含铜宫内节育器 技术要求与试验方法 |
China National Standards copper |
English PDF |
GB/T 4721-2021 |
General rules for rigid copper clad laminates for printed circuits 印制电路用刚性覆铜箔层压板通用规则 |
China National Standards copper |
English PDF |
GB/T 11019-2021 |
Nickel coated round copper wire 镀镍圆铜线 |
China National Standards copper |
English PDF |
GB/T 14949.6-2021 |
Manganese ores—Determination of copper,lead and zinc content—Flame atomic absorption spectrometric method 锰矿石 铜、铅和锌含量的测定 火焰原子吸收光谱法 |
China National Standards copper |
English PDF |
GB/T 39152-2020 |
Test method of the bending stress relaxation for copper and copper alloy 铜及铜合金弯曲应力松弛试验方法 |
China National Standards copper |
English PDF |
GB/T 39180-2020 |
Guide for circular economy evaluating—copper smelting industry 循环经济评价 铜冶炼行业 |
China National Standards copper |
English PDF |
GB/T 39203-2020 |
Technical specifications for extraction of valuable metals from copper smelting dust 铜冶炼烟灰提取有价金属技术规范 |
China National Standards copper |
English PDF |
GB/T 26017-2020 |
High purity copper 高纯铜 |
China National Standards copper |
English PDF |
GB/T 26291-2020 |
Seamless copper-nickel alloys tube for ships 舰船用铜镍合金无缝管 |
China National Standards copper |
English PDF |
GB/T 26302-2020 |
Seamless copper and copper alloy tube for heat pipe 热管用铜及铜合金无缝管 |
China National Standards copper |
English PDF |
GB/T 20928-2020 |
Seamless inner grooved copper tube 无缝内螺纹铜管 |
China National Standards copper |
English PDF |
GB/T 13587-2020 |
Scraps of copper and copper alloy 铜及铜合金废料 |
China National Standards copper |
English PDF |
GB/T 8151.22-2020 |
Methods for chemical analysis of zinc concentrates—Part 22: Determination of zinc, copper, lead,iron,aluminium ,calcium and magnesium contents—Wavelength dispersive X-ray fluorescence spectrometric method 锌精矿化学分析方法 第22部分:锌、铜、铅、铁、铝、钙和镁含量的测定 波长色散X射线荧光光谱法 |
China National Standards copper |
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GB/T 4423-2020 |
copper and copper alloy cold-drawn rod and bar 铜及铜合金拉制棒 |
China National Standards copper |
English PDF |
GB/T 5230-2020 |
Electrodeposited copper foil for printed board 印制板用电解铜箔 |
China National Standards copper |
English PDF |
GB/T 1531-2020 |
copper and copper alloy capillary tube 铜及铜合金毛细管 |
China National Standards copper |
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GB/T 38968-2020 |
Guidelines for circular economy practical technologies in copper smelting industry 铜冶炼行业循环经济实践技术指南 |
China National Standards copper |
English PDF |
GB/T 38812.3-2020 |
Direct reduced iron—Determination of silicon, manganese, phosphorus, vanadium, titanium, copper, aluminum, arsenic, magnesium, calcium, potassium and sodium content—Inductively coupled plasma atomic emission spectrometric method 直接还原铁 硅、锰、磷、钒、钛、铜、铝、砷、镁、钙、钾、钠含量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
GB/T 25085.3-2020 |
Road vehicles—Automotive cables—Part 3: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core copper conductor cables 道路车辆 汽车电缆 第3部分:交流30 V或直流60 V单芯铜导体电缆的尺寸和要求 |
China National Standards copper |
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GB/T 8704.10-2020 |
Ferrovanadium—Determination of silicon, manganese, phosphorus, aluminum, copper, chromium, nickel and titanium contents— Inductively coupled plasma atomic emission spectrometric method 钒铁 硅、锰、磷、铝、铜、铬、镍、钛含量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards copper |
English PDF |
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