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GB/T 7479-1987 Water quality--Determination of ammonium--Nessler’s reagent colorimetric method 水质 铵的测定 纳氏试剂比色法 - 中英文版 |
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GB/T 6525-1986 Sintered metal materials--Determinationof compression strength at room temperature 烧结金属材料室温压缩强度的测定 - 中英文版 |
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GB/T 4921-1985 Waste gasfrom manufacturing process--Determination of chemical oxygendemand and nitrogenoxide--Potassium dichromate oxidation and naphthylethylene diamine colorimetric method 工业废气 耗氧值和氧化氮的测定 重铬酸钾氧化、萘乙二胺比色法 - 中英文版 |
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GB/T 4920-1985 Determination of sulphuric acidmist in tail gas in sulphuric acid concentration process--Barium chromate colorimetric method 硫酸浓缩尾气硫酸雾的测定 铬酸钡比色法 - 中英文版 |
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GB/T 4919-1985 Waste water from manufacturing process--Determination of total nitro compounds--Gas chromato-graphic method 工业废水 总硝基化合物的测定 气相色谱法 - 中英文版 |
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GB/T 257-1964 Determination of saturated vapor pressure of engine fuels(Reid method) 发动机燃料饱和蒸气压测定法 (雷德法) - 中英文版 |
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