GB/T 23901.2-2019
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 23901.2-2019
Non-destructive testing—Image quality of radiographs—Part 2:Determination of the image quality value using step/hole-type image quality indicators 无损检测 射线照相检测图像质量 第2部分:阶梯孔型像质计像质值的测定
Issued Date:2019
Implemented Date:2020-1-1
Issued by:
The Standardization Administration of the People's Republic of China