Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 7731.12-2008 |
Ferrotungsten - Determination of sulfur content - Infrared absorption method and combustion titration method 钨铁 硫含量的测定 红外线吸收法和燃烧中和滴定法 |
China National Standards Ferrotungsten Determination sulfur |
English PDF |
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