China 'GB/T 42274-2022
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 42274-2022
Determination of content and distribution of trace elements (magnesium, gallium) in aluminum nitride materials Secondary ion mass spectrometry 氮化铝材料中痕量元素（镁、镓）含量及分布的测定 二次离子质谱法
Issued Date:2022/12/30
Implemented Date:2023/4/1
Issued by:
The Standardization Administration of the People's Republic of China
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