YD/T 638.6-1993
Type designation for telegraph communication equipment (English Version)
- Standard No.
- YD/T 638.6-1993
- Language
- Chinese, Available in English version
- Release Date
- 1993
- Published By
- Professional Standard - Post and Telecommunication
- Latest
- YD/T 638.6-1993
YD/T 638.6-1993 history
- 1993 YD/T 638.6-1993 Type designation for telegraph communication equipment
