TB 1474-1983
Standard Series of Manual Switching Equipment for Railway Long-distance Telephone (English Version)
- Standard No.
- TB 1474-1983
- Language
- Chinese, Available in English version
- Release Date
- 1983
- Published By
- Professional Standard - Railway
- Status
- Latest
- TB 1474-1983
TB 1474-1983 history
- 1983 TB 1474-1983 Standard Series of Manual Switching Equipment for Railway Long-distance Telephone
