dispersão : 197 phrases in 25 subjects |
Agriculture | 1 |
Antennas and waveguides | 4 |
Brazil | 1 |
Chemistry | 10 |
Communications | 18 |
Earth sciences | 13 |
Electronics | 81 |
Environment | 5 |
Finances | 1 |
General | 9 |
Health care | 1 |
Industry | 5 |
Information technology | 8 |
Life sciences | 6 |
Mathematics | 5 |
Mechanic engineering | 1 |
Medical | 1 |
Metallurgy | 2 |
Municipal planning | 2 |
Natural sciences | 1 |
Satellite communications | 1 |
Statistics | 18 |
Technology | 1 |
Transport | 1 |
Vacuum tubes | 1 |