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GB/T 34176-2017
邻二氮杂菲分光光度法测定耐火材料中的二价和三价铁离子化学分析方法
Chemical analysis methods for determination of Fe2+ and Fe3+ in refractory products by the spectral photometric method with 1,10-phenanthroline
GB/T 34179-2017
Photovoltaic glass—Accelerated aging test method under multi-factor coupling conditions
GB/T 34172-2017
Microbeam analysis—Electron backscatter diffraction—Phase analysis method of metal and alloy
GB/T 3854-2017
Test method for hardness of reinforced plastics by means of a Barcol impresser
GB/T 9316-2007
Safety requirements for electronic flash apparatus for photographic purposes





