Standard Code | Standard Title | Standard Class | Order |
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GB/T 1819.4-2004 |
Methodsfor chemical analysis of tin concentrates--Determination of lead content--Flameatomic absorption spectrometric method and EDTA titrimetric method 锡精矿化学分析方法 铅量的测定 火焰原子吸收光谱法和EDTA滴定法 |
China National Standards Methodsfor chemical analysis |
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GB/T 1819.13-2004 |
Methodsfor chemical analysis of tin concentrates--Determination of magnesium oxide andcalcium oxide contents--Flame atomic absorption spectrometric method 锡精矿化学分析方法 氧化镁、氧化钙量的测定 火焰原子吸收光谱法 |
China National Standards Methodsfor chemical analysis |
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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 钢铁及合金化学分析方法 碳酸钠分离-二苯碳酰二肼光度法测定铬量 |
China National Standards Methodsfor chemical analysis |
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