DIN 51457 (2016-11)现行
Testing Of Ceramic Raw And Basic Materials - Direct Determination Of Mass Fractions Of Trace Impurities In Powders, Granules And Lumps Of Graphite By Optical Emission Spectroscopy By Inductively Coupled Plasma (icp-oes) And By Electrothermal Vaporization (etv) Under The Action Of A Halogenated Reaction Gas (modifiers)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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