电源开关: 49 phrases in 17 subjects |
Agriculture | 1 |
Automobiles | 9 |
Aviation | 6 |
Communications | 2 |
Electronics | 6 |
General | 1 |
Geophysics | 1 |
Information technology | 3 |
Lighting other than cinema | 1 |
Oil / petroleum | 2 |
Project management | 1 |
Rail transport | 3 |
Space | 1 |
Steel production | 1 |
Technology | 6 |
Telecommunications | 4 |
Wind Energy | 1 |