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GB/T 14949.11-2021 Manganese ores—Determination of carbon content—Gravimetric method and infrared absorption method - 英文版 |
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GB/T 14637-2021 Determination of copper,iron and zinc in industrial circulating cooling water and scale—Atomic absorption spectrometric method - 英文版 |
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GB/T 14636-2021 Determination of calcium and magnesium in industrial circulating cooling water and scale—Atomic absorption spectrometric method - 英文版 |
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GB/T 7739.6-2021 Methods for chemical analysis of gold concentrates—Part 6: Determination of zinc content - 英文版 |
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GB/T 7739.5-2021 Methods for chemical analysis of gold concentrates—Part 5: Determination of lead content - 英文版 |
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GB/T 7731.5-2021 Ferrotungsten—Determination of silicon content—Silicomolybdenum blue spectrophotometric method - 英文版 |
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GB/T 7731.4-2021 Ferrotungsten—Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometric method - 英文版 |
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GB/T 7731.1-2021 Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method - 英文版 |
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GB/T 7731.10-2021 Ferrotungsten—Determination of carbon content—Infrared absorption method - 英文版 |
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GB/T 6324.11-2021 Test method of organic chemical products—Part 11：Determination of trace arsenic in liquid products—Atomic fluorescence spectrometric method - 英文版 |
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GB/T 6288-2021 Determination of particle size for granular molecular sieve - 英文版 |
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GB/T 6287-2021 Determination of static adsorbed water for molecular sieve - 英文版 |
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GB/T 6286-2021 Determination of bulk density for molecular sieve - 英文版 |
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GB/T 6017-2021 Determination of purity and hydrocarbon impurities of butadiene for industrial use—Gas chromatographic method - 英文版 |
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GB/T 6015-2021 Determination of trace dimer and residual extraction agent of butadiene for industrial use—Gas chromatographic method - 英文版 |
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GB/T 5687.13-2021 Ferrochromium—Determination of chromium, silicon, manganese, titanium, vanadium, iron contents—Wavelength dispersive X-ray fluorescence spectrometry (fused cast bead method) - 英文版 |
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GB/T 5211.14-2021 General methods of test for pigments and extenders—Part 14: Determination of residue on sieve—Mechanical flushing procedure - 英文版 |
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GB/T 5195.11-2021 Fluorspar—Determination of manganese content—Periodate spectrophotometry and flame atomic absorption spectrometry - 英文版 |
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GB/T 2408-2021 Plastics—Determination of burning characteristics—Horizontal and vertical test - 英文版 |
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GB/T 1845.2-2021 Plastics—Polyethylene (PE) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties - 英文版 |
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GB/T 1425-2021 Determination of melting temperature range for precious metals and their alloys—Testing method of thermal analysis - 英文版 |
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GB/T 614-2021 Chemical reagent—General method for the determination of refractive index - 英文版 |
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GB/T 611-2021 Chemical reagent—General method for the determination of refractive index - 英文版 |
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GB/T 223.91-2021 Iron, steel and alloy—Determination of copper—2,2’-Biquinoline spectrophotometric method - 英文版 |
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GB/T 223.90-2021 Iron, steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method - 英文版 |
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GB/T 40380.1-2021 Metallic powders—Determination of apparent density and flow rate at elevated temperatures—Part 1: Determination of apparent density at elevated temperatures - 英文版 |
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GB/T 40377-2021 Corrosion of metals and alloys—Determination of AC corrosion—Protection criteria - 英文版 |
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GB/T 40374-2021 Hardmetals—Determination of lead and cadmium content—Flame atomic absorption spectrometric method and inductively coupled plasma atomic emission spectrometry - 英文版 |
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GB/T 40500-2021 Determination of total aromatics composition in aviation fuels—Gas chromatography - 英文版 |
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GB/T 40496-2021 Determination of antioxidant content in jet fuel—High performance liquid chromatography - 英文版 |
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