protection : 291 phrases in 28 subjects |
Antennas and waveguides | 2 |
Cables and cable production | 1 |
Ecology | 1 |
Electric machinery | 27 |
Electric traction | 2 |
Electrical engineering | 6 |
Electricity generation | 9 |
Electrochemistry | 1 |
Electronics | 95 |
General | 6 |
International Monetary Fund | 14 |
Isolation | 16 |
Lighting other than cinema | 2 |
Microsoft | 48 |
Nuclear physics | 4 |
Patents | 3 |
Power lines | 3 |
Radio | 27 |
Radiology | 4 |
Rail transport | 8 |
Risk Management | 2 |
Superconductivity | 1 |
Telegraphy | 1 |
Thermal Energy | 1 |
Transformers | 3 |
Vacuum tubes | 1 |
Welding | 2 |
Wind Energy | 1 |