GB/T 5686.2-2008
錳鐵、錳硅合金、氮化錳鐵和金屬錳.硅含量的測定.鉬藍光度法、氟硅酸鉀滴定法和高氯酸重量法
Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal. Determination of silicon content. Molybdenum blue photometric method, silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimetric me
GBT5686.2-2008, GB5686.2-2008