propagação : 337 phrases in 26 subjects |
Agriculture | 14 |
Antennas and waveguides | 8 |
Chemistry | 3 |
Coal | 1 |
Communications | 41 |
Earth sciences | 22 |
Electronics | 138 |
Environment | 4 |
General | 9 |
Health care | 8 |
Industry | 2 |
Information technology | 14 |
International Monetary Fund | 1 |
Life sciences | 19 |
Materials science | 1 |
Mechanic engineering | 1 |
Medical | 5 |
Microsoft | 7 |
Natural resourses and wildlife conservation | 6 |
Natural sciences | 2 |
Patents | 1 |
Physical sciences | 4 |
Piezoelectric crystals | 3 |
Radio | 19 |
Scientific | 2 |
Superconductivity | 2 |