 |
| 电 话会议: 73 phrases in 16 subjects |
| Aviation | 4 |
| Business | 4 |
| Communications | 5 |
| Computer networks | 1 |
| Economy | 1 |
| Electronics | 13 |
| Exhibitions | 1 |
| General | 1 |
| Information technology | 11 |
| Oil / petroleum | 1 |
| Rail transport | 3 |
| Securities | 1 |
| Space | 2 |
| Sports | 1 |
| Technology | 10 |
| Telecommunications | 14 |