共 50 条
- [27] REPLACEMENT OF AUXILIARY POWER-SUPPLY SYSTEM - A CASE-STUDY IN AN URBAN RAILWAY ENGINEERING COSTS AND PRODUCTION ECONOMICS, 1991, 21 (01): : 1 - 9
- [29] TODAYS EMERGENCY POWER-SUPPLY ELEKTROTECHNISCHE ZEITSCHRIFT B-AUSGABE, 1975, 27 (02): : 35 - 35