CNIS GB/T 223.37-89 Methods for chemical analysis of iron,steel and alloy--The indophenol blue photometric methods for the determination of nitrogen content after distillation separation. Формат поставки-PDF. Язык стандарта-Английский
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CNIS GB/T 223.37-89 Methods for chemical analysis of iron,steel and alloy--The indophenol blue photometric methods for the determination of nitrogen content after distillation separation
Язык:
Английский
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PDF
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