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GB/T 7731.4-1987 Methods for chemical analysis of ferrotungsten--The molybdenum blue photometric method for the determination of phosphorus content - 英文版 |
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GB/T 7731.1-1987 Methods for chemical analysis of ferrotungsten--The cinchonine gravimetric method for the determination of tungsten content - 英文版 |
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GB/T 223.58-1987 Methods for chemical analysis of iron，steel and alloy--The extraction-absorption catalytic polarographic method for the determination of manganese content - 英文版 |
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GB/T 223.57-1987 Methods for chemical analysis of iron，steel and alloy--The extraction-absorption catalytic polarographic method for the determination of cadmium content - 英文版 |
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GB/T 223.54-1987 Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrophotometric method for the determination of nickel content - 英文版 |
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GB/T 223.53-1987 Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content - 英文版 |
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GB/T 223.52-1987 Methods for chemical analysis of iron，steel and alloy--The hydroxylamine hydrochloride-iodometric method for the determination of selenium content - 英文版 |
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GB/T 223.51-1987 Methods for chemical analysis of iron，steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content - 英文版 |
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GB/T 7130-1986 Determination of free phenols in phenol-formaldehyde mouldings--Iodometric method - 英文版 |
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GB/T 6730.8-1986 Methods for chemical analysis of iron ores--The potassium dichromate volumetric method for the determination of iron (Ⅱ)content - 英文版 |
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GB/T 6730.7-1986 Methods for chemical analysis of iron ores--The sulfosalicylic acid photometric method for the determination of metallic iron content - 英文版 |
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GB/T 6730.6-1986 Methods for chemical analysis of iron ores--The ferric chloride-sodium acetate volumetric method for the determination of metallic iron content - 英文版 |
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GB/T 6730.51-1986 Methods for chemical analysis of iron ores--The caustic asbestos absorption gravimetric method for the determination of carbon content in carbonate - 英文版 |
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GB/T 6730.50-1986 Methods for chemical analysisof iron ores--The gas volumetric method for the determination of total carbon content - 英文版 |
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GB/T 6730.49-1986 Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of sodium and potassium content - 英文版 |
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GB/T 6730.48-1986 Methods for chemical analysis of iron ores--The dithio diantipyryl methane photometric method for the determination of bismuth content - 英文版 |
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GB/T 6730.36-1986 Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of copper content - 英文版 |
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GB/T 6730.3-1986 Methods for chemical analysis of iron ores--The gravimetric method for the determination of hygroscopic moisture content in analytical samples - 英文版 |
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GB/T 6730.14-1986 Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of calcium and magnesium content - 英文版 |
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GB/T 5687.4-1985 Methods for chemical analysis of ferrochromium--The neutralization titration method for the determination of nitrogen content - 英文版 |
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GB/T 5474-1985 Phenol-formaldehyde mouldings--Determination of free ammonia and ammonium compounds--Colorimetric comparison method - 英文版 |
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GB/T 223.48-1985 Methods for chemical analysis of iron，steel and alloy--The semixylenol orange photometric method for the determination of bismuth content - 英文版 |
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GB/T 223.42-1985 Methods for chemical analysis of iron，steel and alloy--The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalumcontent - 英文版 |
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GB/T 223.41-1985 Methods for chemical analysis of iron，steel and alloy--The anion-exchange separation-pyrogallol photometric method for the determination of tantalum content - 英文版 |
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GB/T 223.38-1985 Methods for chemical analysis of iron，steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content - 英文版 |
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GB/T 5124.4-1985 Methods for chemical analysis of hardmetals--The photometric peroxide method for the determination of titanium content - 英文版 |
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GB/T 5124.3-1985 Methods for chemical analysisof hardmetals--The potentiometric method for the determination of cobalt content - 英文版 |
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GB/T 5080.4-1985 Equipment reliability testing--Procedure for point estimates and confidence intervals from reliability determination tests(Exponential distribution) - 英文版 |
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GB/T 5078-1985 Method for the determination of the space required by capacitors and resistors with unidirectional terminations - 英文版 |
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GB/T 4702.9-1985 Methods for chemical analysis of chromium metal--The crystal violet spectrophotometric method for the determination of antimony content - 英文版 |
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