HB 5171-1981
Metallographic examination standard for copper-containing precious metal materials cuprous oxide (English Version)
- Standard No.
- HB 5171-1981
- Language
- Chinese, Available in English version
- Release Date
- 1981
- Published By
- Professional Standard - Aviation
- Status
- Latest
- HB 5171-1981
HB 5171-1981 history
- 1981 HB 5171-1981 Metallographic examination standard for copper-containing precious metal materials cuprous oxide
