comutador : 222 phrases in 22 subjects |
Antennas and waveguides | 1 |
Brazil | 1 |
Communications | 37 |
Earth sciences | 9 |
Electric traction | 7 |
Electricity generation | 2 |
Electronics | 48 |
General | 5 |
Industry | 2 |
Information technology | 35 |
Materials science | 2 |
Mechanic engineering | 15 |
Metallurgy | 4 |
Microsoft | 5 |
Patents | 2 |
Power system protection | 1 |
Rail transport | 2 |
Telecommunications | 13 |
Telegraphy | 4 |
Telephony | 9 |
Transformers | 1 |
Transport | 17 |