供电系统: 81 phrases in 20 subjects |
Agriculture | 1 |
Air defense | 1 |
Aviation | 3 |
Business | 2 |
Communications | 2 |
Drilling | 1 |
Earth sciences | 2 |
Electric machinery | 3 |
Electronics | 15 |
Hydroelectric power stations | 4 |
Information technology | 1 |
Metallurgy | 1 |
Nautical | 4 |
Oil / petroleum | 2 |
Project management | 1 |
Rail transport | 6 |
Refrigeration | 2 |
Securities | 2 |
Space | 6 |
Technology | 22 |