differentiell : 97 phrases in 12 subjects |
Antennas and waveguides | 1 |
Chemistry | 1 |
Communications | 5 |
Earth sciences | 6 |
Electronics | 60 |
General | 1 |
Health care | 3 |
Information technology | 6 |
Natural sciences | 1 |
Physical sciences | 9 |
Power lines | 2 |
Telegraphy | 2 |