duplexing : 31 phrases in 13 subjects |
Antennas and waveguides | 2 |
Computers | 2 |
Electronics | 4 |
High frequency electronics | 1 |
Information technology | 4 |
Mass media | 2 |
Metallurgy | 1 |
Polygraphy | 1 |
Programming | 5 |
Radioengineering | 1 |
Security systems | 2 |
Technology | 1 |
Telecommunications | 5 |