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GB/T 40795.1-2021 Chemical analysis method of lanthanum-cerium metals and their compounds—Part 1:Determination of cerium content—Ammonium ferrous sulfate titration method - 英文版 |
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GB/T 18115.4-2021 Chemical analysis methods of rare earth impurities in rare earth metals and their oxides -- Part 4: Determination of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yt - 英文版 |
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GB/T 12690.7-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 7: Determination of silicon content - 英文版 |
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GB/T 39506-2020 Determination of the poly vinyl chloride (PVC) content of unplasticized poly vinyl chloride (PVC-U) pipes and fittings—Method based on total chlorine content - 英文版 |
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GB/T 39534-2020 Corrosion of metals and alloys—Method for determination of the uniform corrosion rate of stainless steels and nickel based alloys in liquids - 英文版 |
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GB/T 39137-2020 Determination for the orientation of refractory metal single crystal - 英文版 |
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GB/T 11060.8-2020 Natural gas—Determination of sulfur compounds—Part 8：Determination of total sulfur content by ultraviolet fluorescence method - 英文版 |
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GB/T 39059-2020 Determination of harmful substance emissions from synthetic sports surfaces—Environmental chambers method - 英文版 |
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GB/T 38783-2020 Method of coating thickness determination for precious metal composites by scanning electron microscope - 英文版 |
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GB/T 20975.24-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 24：Determination of total rare earth content - 英文版 |
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GB/T 38812.2-2020 Direct reduced iron—Determination of metallic iron content—The potassium dichromate titrimetric method after decomposition of sample by ferric chloride - 英文版 |
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GB/T 24522-2020 Metallic materials—Method of test for the determination of resistance to stable crack extension using specimens of low constraint - 英文版 |
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GB/T 38744-2020 Methods for chemical analysis of synergistic catalysis elements in automotive exhaust catalysis－Determination of cerium, lanthanum, praseodymium, neodymium ,barium and zirconium contents－Inductively coupled plasma atomic emission spectrometry - 英文版 |
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GB/T 38596-2020 Determination method of heavy metal contents in the wastewater during catalyst production - 英文版 |
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GB/T 38719-2020 Metallic materials—Tube—Determination of biaxial stress-strain curve of tube by hydro-bulging test - 英文版 |
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GB/T 38516-2020 Permeable sintered metal materials—Determination of average pore size of medium flow - 英文版 |
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GB/T 38513-2020 Methods for chemical analysis of niobium hafnium alloys—Determination of hafnium,titanium,zirconium,tungsten,tantalum contents—Inductively coupled plasma atomic emission spectrometry - 英文版 |
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GB/T 4702.18-2020 Chromiun metal—Determination of vanadium content—Tantalum reagent trichloromethane extraction spectrophtometry method - 英文版 |
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GB/T 39648-2020 Textiles—Tests for colour fastness—Determination of colour fastness grades by digital imaging techniques - 英文版 |
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GB/T 39560.701-2020 Determination of certain substances in electrical and electronic products—Part 7-1:Hexavalent chromium—Presence of hexavalent chromium [Cr(VI)] in colourless and coloured corrosion-protected coatings on metals by the colorimetric method - 英文版 |
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GB/T 39560.301-2020 Determination of certain substances in electrical and electronic products—Part 3-1: Screening lead, mercury, cadmium, total chromium and total bromine by X-ray fluorescence spectrometry - 英文版 |
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GB/T 39544-2020 Natural rubber latex concentrate—Determination of total phosphate content—Spectrophotometric method - 英文版 |
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GB/T 15076.6-2020 Methods for chemical analysis of tantalum and niobium--Part 6: Determination of silicon content--Inductively coupled plasma atomic emission spectrometry - 英文版 |
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GB/T 15076.4-2020 Methods for chemical analysis of tantalum and niobium--Part 4: Determination of iron content--1, 10-Phenanthroline spectrophotometry - 英文版 |
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GB/T 15076.11-2020 Methods for chemical analysis of tantalum and niobium--Part 11: Determination of arsenic, antimony, lead, tin and bismuth contents in niobium--Direct current arc atomic emission spectrometry - 英文版 |
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GB/T 14849.3-2020 Methods for chemical analysis of silicon metal--Part 3: Determination of calcium content - 英文版 |
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GB/T 14849.1-2020 Methods for chemical analysis of silicon metal--Part 1: Determination of iron content - 英文版 |
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GB/T 39356-2020 Determination of total nickel,total cobalt,total selenium, total vanadium, total stibium,total thallium in fertilizers — Inductively coupled plasma optical emission spectroscopy - 英文版 |
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GB/T 39306-2020 Reclaimed water quality—Determination of total arsenic—Atomic fluorescence spectrometry - 英文版 |
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GB/T 39289-2020 Determination of the adhesion strength—Plastic and metal - 英文版 |
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