中華人民共和國國家標準
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20975.30-2019
Methods for chemical analysis of aluminium and aluminium alloys—Part 30:Determination of hydrogen content—Heating extraction-thermal conductivity method 鋁及鋁合金化學分析方法 第30部分:氫含量的測定 加熱提取熱導法
Issued Date:2019
Implemented Date:2020-5-1
Issued by:
The Standardization Administration of the People's Republic of China