
Light metals and their alloys; Code of designation based on chemical symbols
出版:International Organization for Standardization

专家解读视频
1ED 1981 [01/07/1981]
NFA 02 004 : 1977 - Similar to
NBN EN 288-4 : 93 ADD 1 97 - Identical
NFA 02 004 : 1977 - Similar to
NBN EN 288-4:1993 - Identical
NFA 02 004:1977 - Similar