摘要
简要评述了国内外主要射线照相标准关于射线照相技术级别的规定,并讨论了射线照相技术级别规定的一些变化。
The requirements for classification of radiographic techniques in some radiographic standards are re-viewed briefly. At the same time, the changes of some requirements are discussed.
出处
《无损检测》
1998年第9期254-260,共7页
Nondestructive Testing
