overall system : 22 phrases in 14 subjects |
Astronautics | 1 |
Aviation | 1 |
Computers | 1 |
Construction | 3 |
General | 2 |
Mass media | 2 |
Military | 2 |
Nuclear and fusion power | 1 |
Programming | 4 |
Quality control and standards | 1 |
Radio | 1 |
Security systems | 1 |
Technology | 1 |
Telecommunications | 1 |