EN 24829-2 AC-1991 钢和铸铁.硅总含量的测定.还原硅酸钼分光光度法.第2部分:硅含量介于0.01%和0.05%之间.修改件(ISO 4829-2-86)
Steel and cast iron; determination of total silicon content; reduced molybdosilicate spectrophotometric method; part 2: silicon content between 0.01 and 0.05 %; amendment (ISO 4829-2:1986)