service channel : 36 phrases in 13 subjects |
Air defense | 2 |
Aviation | 1 |
Business | 3 |
Computer networks | 1 |
Electronics | 11 |
Exhibitions | 1 |
Geophysics | 1 |
Information technology | 3 |
Multimedia | 1 |
Oil / petroleum | 1 |
Space | 5 |
Technology | 3 |
Telecommunications | 3 |