télétransmission: 22 phrases in 10 subjects |
Astronautics | 1 |
Automated equipment | 4 |
Aviation | 1 |
Computers | 1 |
Electrical engineering | 2 |
Information technology | 2 |
Mechanic engineering | 1 |
Natural resourses and wildlife conservation | 3 |
Radio | 4 |
Technology | 3 |