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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 16484.18-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 18: Determination of ignition loss content in light rare earth carbonate - Gravimetry 氯化稀土、碳酸轻稀土化学分析方法 第18部分：碳酸轻稀土中灼减量的测定 重量法 |
China National Standards Chemical |
 English PDF |
| GB/T 16484.17-1996 |
Methods for Chemical analysis of rare earth chloride and carbonate--Determination of water content in rare earth carbonate 氯化稀土、碳酸稀土化学分析方法 碳酸稀土中水分量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 16484.16-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 16: Determination of water insoluble substance content in rare earth chloride - Gravimetry 氯化稀土、碳酸轻稀土化学分析方法 第16部分：氯化稀土中水不溶物量的测定 重量法 |
China National Standards Chemical |
English PDF |
| GB/T 16484.15-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 15: Determination of chlorine content in light rare earth carbonate - Silver nitrate turbidimetry 氯化稀土、碳酸轻稀土化学分析方法 第15部分：碳酸轻稀土中氯量的测定 硝酸银比浊法 |
China National Standards Chemical |
English PDF |
| GB/T 16484.14-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 14: Determination of phosphorus radical content - Phosphorus-antimonate-molybdenum blue spectrophotometry 氯化稀土、碳酸轻稀土化学分析方法 第14部分：磷酸根量的测定 锑磷钼蓝分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 16484.13-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 13: Determination of ammonium chloride content - Distillation-titrimetry 氯化稀土、碳酸轻稀土化学分析方法 第13部分：氯化铵量的测定 蒸馏-滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 16484.12-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 12: Determination of sulfate radical 氯化稀土、碳酸轻稀土化学分析方法 第12部分：硫酸根量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 16484.1-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 1: Determination of cerium oxide content - Ammonium ferrous sulfate titrimetry 氯化稀土、碳酸轻稀土化学分析方法 第1部分：氧化铈量的测定 硫酸亚铁铵滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 16484.11-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 11: Determination of lead oxide content - Flame atomic absorption spectrometry 氯化稀土、碳酸轻稀土化学分析方法 第11部分：氧化铅量的测定 火焰原子吸收光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 16484.10-2009 |
Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 10: Determination of manganese oxide content - Flame atomic absorption spectrometry 氯化稀土、碳酸轻稀土化学分析方法 第10部分：氧化锰量的测定 火焰原子吸收光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 16483-2008 |
Safety data sheet for Chemical products content and order of sections 化学品安全技术说明书 内容和项目顺序 |
China National Standards Chemical |
English PDF |
| GB/T 16480.3-1996 |
Methods for Chemical analysis of yttrium and yttrium oxide--Determination of fluorine content 金属钇及氧化钇化学分析方法 氟量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 16477.5-2010 |
Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Part 5: Determination of titanium content - Inductively coupled plasma atomic emission spectrometry 稀土硅铁合金及镁硅铁合金化学分析方法 第5部分：钛量的测定 电感耦合等离子体发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 16477.4-2010 |
Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Part 4: Determination of silicon content 稀土硅铁合金及镁硅铁合金化学分析方法 第4部分：硅量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 16477.3-2010 |
Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Part 3: Determination of magnesia content - Inductively coupled plasma atomic emission spectrometry 稀土硅铁合金及镁硅铁合金化学分析方法 第3部分：氧化镁含量的测定 电感耦合等离子体发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 16477.2-2010 |
Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Part 2: Determination of calcium, magnesium and manganese contents - Inductively coupled plasma atomic emission spectrometry 稀土硅铁合金及镁硅铁合金化学分析方法 第2部分：钙、镁、锰量的测定 电感耦合等离子体发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 16477.1-2010 |
Chemical analysis methods of rare-earth ferrosilicon alloy and rare-earth ferrosilicon magnesium alloy - Part 1: Determination of total rare earth content 稀土硅铁合金及镁硅铁合金化学分析方法 第1部分：稀土总量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 16399-1996 |
Method for Chemical analysis of clay 粘土化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 16310.5-1996 |
Specification on evaluation methods of hazards of liquid Chemicals transported in bulk by shipping --Assessment procedure and determination of pollution category 船舶散装运输液体化学品危害性评价规范 危害性评价程序与污染分类方法 |
China National Standards Chemical |
English PDF |
| GB/T 16310.4-1996 |
Specification on evaluation methods of hazards of liquid Chemicals transported in bulk by shipping--Toxicity test method for mammal 船舶散装运输液体化学品危害性评价规范 哺乳动物毒性试验方法 |
China National Standards Chemical |
English PDF |
| GB/T 16310.3-1996 |
Specification on evaluation methods of hazards of liquid Chemicals transported in bulk by shipping--Taint testing method for aquatic organism 船舶散装运输液体化学品危害性评价规范 水生生物沾染试验方法 |
China National Standards Chemical |
English PDF |
| GB/T 16310.2-1996 |
Specification on evaluation methods of hazards of liquid Chemicals transported in bulk by shipping--Bioaccumulation testing method for aquatic organism 船舶散装运输液体化学品危害性评价规范 水生生物积累性试验方法 |
China National Standards Chemical |
English PDF |
| GB/T 16310.1-1996 |
Specification on evaluation methods of hazards of liquid Chemicals transported in bulk by shipping--Acute toxicity testing methods for aquatic organism 船舶散装运输液体化学品危害性评价规范 水生生物急性毒性试验方法 |
China National Standards Chemical |
English PDF |
| GB/T 15927-2010 |
Method for Chemical analysis of arsenic ores - Determination of arsenic content 砷矿石化学分析方法 砷量测定 |
China National Standards Chemical |
English PDF |
| GB/T 15926-2010 |
Method for Chemical analysis of bismuth ores - Determination of bismuth content 铋矿石化学分析方法 铋量测定 |
China National Standards Chemical |
English PDF |
| GB/T 15925-2010 |
Method for Chemical analysis of antimony ores - Determination of antimony content 锑矿石化学分析方法 锑量测定 |
China National Standards Chemical |
English PDF |
| GB/T 15924-2010 |
Method for Chemical analysis of tin ores - Determination of tin content 锡矿石化学分析方法 锡量测定 |
China National Standards Chemical |
English PDF |
| GB/T 15923-2010 |
Method for Chemical analysis of nickel ores - Determination of nickel content 镍矿石化学分析方法 镍量测定 |
China National Standards Chemical |
English PDF |
| GB/T 15922-2010 |
Method for Chemical analysis of cobalt ores - Determination of cobalt content 钴矿石化学分析方法 钴量测定 |
China National Standards Chemical |
English PDF |
| GB/T 15901-1995 |
Chemical reagent--Copper(Ⅱ)chloride dihydrate 化学试剂 二水合氯化铜(氯化铜) |
China National Standards Chemical |
English PDF |
| GB/T 15899-1995 |
Chemical reagent--Manganese sulfate monohydrate 化学试剂 一水合硫酸锰(硫酸锰) |
China National Standards Chemical |
English PDF |
| GB/T 15898-2013 |
Chemical reagent—Cobalt nitrate hexahydrate 化学试剂 六水合硝酸钴(硝酸钴) |
China National Standards Chemical |
English PDF |
| GB/T 15897-1995 |
Chemical reagent--Calcium carbonate 化学试剂 碳酸钙 |
China National Standards Chemical |
English PDF |
| GB/T 15896-1995 |
Chemical reagent--Formic acid 化学试剂 甲酸 |
China National Standards Chemical |
English PDF |
| GB/T 15895-1995 |
Chemical reagent--1，2-Dichloroethane 化学试剂 1，2-二氯乙烷 |
China National Standards Chemical |
English PDF |
| GB/T 15894-2008 |
Chemical reagent - Petroleum ether 化学试剂 石油醚 |
China National Standards Chemical |
English PDF |
| GB/T 15783-1995 |
The state technical standard of Chemical weed control in main plantation trees 主要造林树种林地化学除草技术规程 |
China National Standards Chemical |
English PDF |
| GB/T 15626-1995 |
The specifications for port handling of liquid Chemicals in bulk 散装液体化工产品港口装卸技术要求 |
China National Standards Chemical |
English PDF |
| GB/T 15519-2002 |
Chemical conversion coatings--Black oxide coating on iron and steel--Specification and test methods 化学转化膜 钢铁黑色氧化膜 规范和试验方法 |
China National Standards Chemical |
English PDF |
| GB/T 1549-2008 |
Chemical analysis methods of glass, glass marble and vitreous fiber 纤维玻璃化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 15489.7-1995 |
Colour filter glass test methods--Chemical stability 滤光玻璃测试方法 化学稳定性 |
China National Standards Chemical |
English PDF |
| GB/T 15456-2008 |
Industrial circulating cooling water - Determination of the Chemical oxygen demand - Potassium permanganate method 工业循环冷却水中化学需氧量(COD)的测定 高锰酸钾法 |
China National Standards Chemical |
English PDF |
| GB/T 15355-2008 |
Chemical reagent - Nickel chloride hexahydrate 化学试剂 六水合氯化镍(氯化镍) |
China National Standards Chemical |
English PDF |
| GB/T 15354-2011 |
Chemical reagent - Tributyl phosphate 化学试剂 磷酸三丁酯 |
China National Standards Chemical |
English PDF |
| GB/T 15347-2015 |
Chemical reagent—L(+)-Ascorbic acid 化学试剂 L(+)-抗坏血酸 |
China National Standards Chemical |
English PDF |
| GB/T 15343-2012 |
Methods for Chemical analysis of talc 滑石化学分析方法 |
China National Standards Chemical |
English PDF |
| GB/T 15249.5-2009 |
Methods for Chemical analysis of crude gold - Part 5: Determination of mercury content - Cold atomic absorption spectrometry 合质金化学分析方法 第5部分：汞量的测定 冷原子吸收光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 15249.4-2009 |
Methods for Chemical analysis of crude gold - Part 4: Determination of lead content - EDTA titrimetric method 合质金化学分析方法 第4部分：铅量的测定 EDTA滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 15249.3-2009 |
Methods for Chemical analysis of crude gold - Part 3: Determination of copper content - Iodometric method 合质金化学分析方法 第3部分：铜量的测定 碘量法 |
China National Standards Chemical |
English PDF |
| GB/T 15249.2-2009 |
Methods for Chemical analysis of crude gold - Part 2: Determination of silver content - Fire assay gravimetric and EDTA titrimetric methods 合质金化学分析方法 第2部分：银量的测定 火试金重量法和EDTA滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 15249.1-2009 |
Methods for Chemical analysis of crude gold - Part 1: Determination of gold content - Fire assay gravimetric method 合质金化学分析方法 第1部分：金量的测定 火试金重量法 |
China National Standards Chemical |
English PDF |
| GB/T 15076.9-2008 |
Methods for Chemical analysis of tantalum and niobium - Determination of iron, chromium, nickel, manganese, titanium, aluminum, copper, tin, lead and zirconium contents in tantalum 钽铌化学分析方法 钽中铁、铬、镍、锰、钛、铝、铜、锡、铅和锆量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.8-2008 |
Methods for Chemical analysis of tantalum and niobium - Determination of carbon and sulphur contents 钽铌化学分析方法 碳量和硫量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.7-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of phosphorus content in niob-ium 钽铌化学分析方法 铌中磷量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.6-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of silicon content in tantalum 钽铌化学分析方法 钽中硅量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.5-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of molybdenum and tungsten contents 钽铌化学分析方法 钼量和钨量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.4-1994 |
Methods for Chemical analysis of tantalumand niob-ium--Determination of iron content 钽铌化学分析方法 铁量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.3-1994 |
Methods for Chemical analysis of tantalumand niob-ium--Determination of copper content 钽铌化学分析方法 铜量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.2-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of niobium content in tantalum 钽铌化学分析方法 钽中铌量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.16-2008 |
Methods for Chemical analysis of tantalum and niobium - Determination of sodium and potassium contents 钽铌化学分析方法 钠量和钾量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.15-2008 |
Methods for Chemical analysis of tantalum and niobium - Determination of hydrogen content 钽铌化学分析方法 氢量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.14-2008 |
Methods for Chemical analysis of tantalum and niobium - Determination of oxygen content 钽铌化学分析方法 氧量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.13-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of nitrogen content in tantalum 钽铌化学分析方法 钽中氮量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.12-2008 |
Methods for Chemical analysis of tantalum and niobium - Determination of phosphorus content in tantalum 钽铌化学分析方法 钽中磷量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.1-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of tantalum content in niobium 钽铌化学分析方法 铌中钽量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.11-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of arsenic antimony，lead，tin and bismuth contents in niobium 钽铌化学分析方法 铌中砷、锑、铅、锡和铋量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15076.10-1994 |
Methods for Chemical analysis of tantalum and niob-ium--Determination of iron，nickel，chromium，titan-ium，zirconium， aluminium and manganese contents in niobium 钽铌化学分析方法 铌中铁、镍、铬、钛、锆、铝和锰量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15057.9-1994 |
Limestone for Chemical industry--Determination of phosphorus content--Molybdenum blue spectrophotometric method 化工用石灰石中磷含量的测定 钼蓝分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.8-1994 |
Limestonefor Chemical industry--Determination of sulfur content--Gravimetric and combustion-iodate titrimetric methods 化工用石灰石中硫含量的测定 硫酸钡重量法和燃烧-碘酸钾滴定法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.7-1994 |
Limestone for Chemical industry--Determination of aluminium oxide content--Chromazurol S spectrophotometric method 化工用石灰石中氧化铝含量的测定 铬天青S分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.6-1994 |
Limestone for Chemical industry--Determination of iron content--Phenanthroline spectrophotometric method 化工用石灰石中铁含量的测定 邻菲啰啉分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.5-1994 |
Limestone for Chemical industry--Determination of silicon dioxide content--Molybdenum blue spectrophotometric method 化工用石灰石中二氧化硅含量的测定 钼蓝分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.4-1994 |
Limestone for Chemical industry--Determination of iron and aluminium oxides content--Gravimetric method 化工用石灰石中三氧化二物含量的测定 重量法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.3-1994 |
Limestone for Chemical industry--Determination of insoluble matter content of hydrochloric acid--Gravimetric method 化工用石灰石中盐酸不溶物含量的测定 重量法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.2-1994 |
Limestone for Chemical industry--Determination of calcium and magnesium oxides content 化工用石灰石中氧化钙和氧化镁含量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15057.1-1994 |
Limestone for Chemical industry--Methods of sampling and preparing 化工用石灰石采样与样品制备方法 |
China National Standards Chemical |
English PDF |
| GB/T 15057.11-1994 |
Limestone for Chemical industry--Determination of size 化工用石灰石粒度的测定 |
China National Standards Chemical |
English PDF |
| GB/T 15057.10-1994 |
Limestone for Chemical industry--Determination of content of loss on ignition--Gravimetric method 化工用石灰石中灼烧失量的测定 重量法 |
China National Standards Chemical |
English PDF |
| GB/T 15000.5-1994 |
Directives for the work of reference materials(5)--Technologic rules for reference materials of Chemical composition 标准样品工作导则(5) 化学成分标准样品技术通则 |
China National Standards Chemical |
English PDF |
| GB/T 14927.1-2008 |
Laboratory animals - Methods for bioChemical markers of inbred mice and rats 实验动物 近交系小鼠、大鼠生化标记检测法 |
China National Standards Chemical |
English PDF |
| GB/T 14896.3-2009 |
Non-traditional machines - Terminology - Part 3: ElectroChemical machines 特种加工机床 术语 第3部分：电解加工机床 |
China National Standards Chemical |
English PDF |
| GB/T 14849.9-2015 |
Methods for Chemical analysis of silicon metal—Part 9: Determination of titanium content —Diantipyryl methane spectrophotometry 工业硅化学分析方法 第9部分：钛含量的测定 二安替吡啉甲烷分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.8-2015 |
Methods for Chemical analysis of silicon metal—Part 8: Determination of copper content—Atomic absorption spectrometric method 工业硅化学分析方法 第8部分：铜含量的测定 原子吸收光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.7-2015 |
Methods for Chemical analysis of silicon metal—Part 7: Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometry 工业硅化学分析方法 第7部分：磷含量的测定 磷钼蓝分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.6-2014 |
Methods for Chemical analysis of silicon metal―Part 6：Determination of carbon―Infrared absorption method 工业硅化学分析方法 第6部分：碳含量的测定 红外吸收法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.5-2014 |
Methods for Chemical analysis of silicon metal―Part 5：Determination of impurity contents―X-ray fluorescence method 工业硅化学分析方法 第5部分：杂质元素含量的测定 X射线荧光光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.4-2014 |
Methods for Chemical analysis of silicon metal―Part 4：Determination of impurity contents―Inductively coupled plasma atomic emission spectrometric method 工业硅化学分析方法 第4部分：杂质元素含量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.3-2007 |
Methods for Chemical analysis of silicon metal - Part 3：Determination of calcium content 工业硅化学分析方法 第3部分：钙含量的测定 |
China National Standards Chemical |
English PDF |
| GB/T 14849.2-2007 |
Methods for Chemical analysis of silicon metal - Part 2：Determination of aluminum content - Chrome azurol S spectrophotometric method 工业硅化学分析方法 第2部分：铝含量的测定 铬天青-S分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 14849.1-2007 |
Methods for Chemical analysis of silicon metal - Part 1： Determination of iron content - 1,10-phenanthrolion spectrophotometric method 工业硅化学分析方法 第1部分：铁含量的测定 1，10一二氮杂菲分光光度法 |
China National Standards Chemical |
English PDF |
| GB/T 14840-2010 |
Methods for Chemical analysis of limestones - Determination of free silicon dioxide content 石灰岩化学分析方法 游离二氧化硅量测定 |
China National Standards Chemical |
English PDF |
| GB/T 14839-1993 |
Technical symbols for geoChemical exploration 地球化学勘查技术符号 |
China National Standards Chemical |
English PDF |
| GB/T 14827-1993 |
Organic Chemical products forindustrial use--Test method for the determination of acidity and alkal-inity--Volumetric method 有机化工产品酸度、碱度的测定方法 容量法 |
China National Standards Chemical |
English PDF |
| GB/T 1467-2008 |
Method for Chemical analysis of metallurgy product - General rules and regulations 冶金产品化学分析方法标准的总则及一般规定 |
China National Standards Chemical |
English PDF |
| GB/T 14506.9-2010 |
Methods for Chemical analysis of silicate rocks - Part 9: Determination of phosphorus pentoxide content 硅酸盐岩石化学分析方法 第9部分：五氧化二磷量测定 |
China National Standards Chemical |
English PDF |
| GB/T 14506.8-2010 |
Methods for Chemical analysis of silicate rocks - Part 8: Determination of titanium dioxide content 硅酸盐岩石化学分析方法 第8部分：二氧化钛量测定 |
China National Standards Chemical |
English PDF |
| GB/T 14506.7-2010 |
Methods for Chemical analysis of silicate rocks - Part 7: Determination of magnesium oxide content 硅酸盐岩石化学分析方法 第7部分：氧化镁量测定 |
China National Standards Chemical |
English PDF |
| GB/T 14506.6-2010 |
Methods for Chemical analysis of silicate rocks - Part 6: Determination of calcium oxide content 硅酸盐岩石化学分析方法 第6部分：氧化钙量测定 |
China National Standards Chemical |
English PDF |
| GB/T 14506.5-2010 |
Methods for Chemical analysis of silicate rocks - Part 5: Determination of ferric oxide content 硅酸盐岩石化学分析方法 第5部分：总铁量测定 |
China National Standards Chemical |
English PDF |
| GB/T 14506.4-2010 |
Methods for Chemical analysis of silicate rocks - Part 4: Determination of aluminium oxide content 硅酸盐岩石化学分析方法 第4部分：三氧化二铝量测定 |
China National Standards Chemical |
English PDF |
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