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GB/T 223.18-1994 Methods for chemical analysis of iron，steel and alloy--The sodium thiosulfate separation iodimetric method for the determination of copper content - 英文版 |
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GB/T 7533-1993 Determination for crystallizing point of organic chemical products for industrial use - 英文版 |
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GB/T 14827-1993 Organic chemical products forindustrial use--Test method for the determination of acidity and alkal-inity--Volumetric method - 英文版 |
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GB/T 14501.3-1993 Spectrochemical determination of tungsten，molybdenum，niobium，titanium and zirconium in uranium hexafluoride - 英文版 |
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GB/T 14501.1-1993 Spectrochemical determination of boron in uranium hexafluoride - 英文版 |
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GB/T 14376-1993 Water quality--Determination of asymmetrical dimethyl hydrazine--Amino ferrocyanide sodium spectrophotometric method - 英文版 |
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GB/T 13580.13-1992 Determination of calcium and magnesium in the wet precipitation--Atomic absorption spectrophotometry - 英文版 |
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GB/T 223.16-1991 Methods for chemical analysis of iron，steel and alloy--The chromotropic acid photometric method for the determination of titanium content - 英文版 |
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GB/T 223.12-1991 Methodsfor chemical analysis of iron，steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content - 英文版 |
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GB/T 13021-1991 Determination for the carbon black content of polyethylene pipes and fittings by calcination and pyrolysis - 英文版 |
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GB/T 12938-1991 Determination of thiosulphate and other related residual chemicals in processed photographic materials--Iodine-amylose，methylene blue and silver sulphide densito-metric methods - 英文版 |
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GB/T 11848.15-1991 Determination of iron，calcium，magnesium，molybdenum，titanium and vanadium in uranium oreconcentrate by atomic absorption spectrometry - 英文版 |
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GB/T 12582-1990 Liquid hydrocarbons--Determination of electrical conductivity--Precision meter - 英文版 |
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GB/T 4333.10-1990 Methods for chemical analysis of ferrosilicon--The infrared absorption method for the determination of carbon content - 英文版 |
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GB/T 11987-1989 Surface active agent--Technical alkane sulphonates--Determination of total alkane sulphonates content - 英文版 |
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GB/T 11998-1989 Determination of glass transitiontemperature of plastics--Thermomechanical analysis - 英文版 |
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GB/T 11914-1989 Water quality--Determination of thechemical oxyyen demand--Dichromate method - 英文版 |
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GB/T 11913-1989 Water quality--Determination of dissolved oxygen--Electrochemical probe method - 英文版 |
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GB/T 11905-1989 Water quality--Determination ofcalcium and magnesium--Atomic absorption spectrophotometric method - 英文版 |
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GB/T 223.66-1989 Methods for chemical analysis of iron，steel and alloy--The thiocyanate chlorpromazine hydrochloride--chloro form extraction photometric method for the determination of tungsten content - 英文版 |
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GB/T 223.46-1989 Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrometric method for the determination of magnesium content - 英文版 |
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GB/T 223.37-1989 Methods for chemical analysis of iron，steel and alloy--The indophenol blue photometric method for the determination of nitrogen content after distillation separation - 英文版 |
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GB/T 223.28-1989 Methods for chemical analysis of iron，steel and alloy--The α-benzoinoxime gravimetric method for the determination of molybdenum content - 英文版 |
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GB/T 223.19-1989 Methods for chemical analysis of iron，steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content - 英文版 |
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GB/T 223.17-1989 Methods for chemical analysis of iron，steel and alloy--The diantipyryl methane photometric method for the determination of titanium content - 英文版 |
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GB/T 11142-1989 Insulating oils--Determination ofgassing under electrical stress and ionization - 英文版 |
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GB/T 11137-1989 Black petroleum products--Determination of kinematic viscosity (reverse-flow method) and calculation of dynamic viscosity - 英文版 |
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GB/T 11223.1-1989 Analytical determination of uranium in ash of biological samples--Solid fluorimetry - 英文版 |
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GB/T 11214-1989 Analytical determination of radium-226 in water - 英文版 |
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GB/T 3653.1-1988 Methods for chemical analysis of ferroboron--The alkalimetric method for the determination of boron content - 英文版 |
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