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transmissão : 1291 phrases in 51 subjects |
| Agriculture | 12 |
| Antennas and waveguides | 11 |
| Automatic control | 11 |
| Brazil | 4 |
| Chemistry | 3 |
| Communications | 280 |
| Construction | 1 |
| Criminal law | 2 |
| Earth sciences | 46 |
| Economy | 6 |
| Education | 3 |
| Electric traction | 11 |
| Electronics | 202 |
| Energy industry | 6 |
| Environment | 9 |
| Finances | 17 |
| General | 27 |
| Health care | 16 |
| Immigration and citizenship | 1 |
| Industry | 27 |
| Information technology | 137 |
| Labor law | 1 |
| Law | 41 |
| Life sciences | 3 |
| Lighting other than cinema | 8 |
| Marketing | 1 |
| Materials science | 4 |
| Mechanic engineering | 125 |
| Medical | 15 |
| Metallurgy | 1 |
| Microsoft | 7 |
| Natural sciences | 2 |
| Nuclear physics | 2 |
| Patents | 71 |
| Pharmacy and pharmacology | 4 |
| Physical sciences | 2 |
| Piezoelectric crystals | 1 |
| Politics | 2 |
| Power lines | 16 |
| Radio | 8 |
| Rail transport | 8 |
| Scientific | 2 |
| Social science | 2 |
| Statistics | 1 |
| Taxes | 1 |
| Technology | 7 |
| Telecommunications | 3 |
| Telegraphy | 24 |
| Telephony | 4 |
| Transport | 91 |
| Vacuum tubes | 2 |
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