lightning -arrester : 33 phrases in 11 subjects |
Communications | 3 |
Electrical engineering | 1 |
Electronics | 5 |
Makarov | 3 |
Mass media | 2 |
Military | 1 |
Power system protection | 1 |
Rail transport | 4 |
Technology | 9 |
Telecommunications | 3 |
Thermal engineering | 1 |