共 50 条
- [21] POWER SUPPLIES FOR TELECOMMUNICATIONS. Telcom Report (English Edition), 1981, 4 (01): : 36 - 39
- [24] UNITED NATIONS AND THE WORLD OF TELECOMMUNICATIONS. Space communication and broadcasting, 1987, 5 (03): : 163 - 172
- [25] POWERING METHODS - RURAL TELECOMMUNICATIONS. Telecommunication journal, 1980, 47 (11): : 97 - 106