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ligação : 847 phrases in 61 subjects |
| Agriculture | 7 |
| Antennas and waveguides | 7 |
| Brazil | 1 |
| Cables and cable production | 9 |
| Chemistry | 19 |
| Communications | 172 |
| Computers | 1 |
| Construction | 6 |
| Cultural studies | 1 |
| Earth sciences | 17 |
| Economy | 3 |
| Education | 2 |
| Electric machinery | 13 |
| Electric motors | 1 |
| Electric traction | 5 |
| Electrical engineering | 2 |
| Electricity generation | 4 |
| Electronics | 161 |
| Energy industry | 5 |
| Environment | 4 |
| Finances | 2 |
| Fish farming pisciculture | 2 |
| Forestry | 1 |
| General | 21 |
| Health care | 7 |
| Immigration and citizenship | 11 |
| Industry | 18 |
| Information technology | 97 |
| Isolation | 10 |
| Law | 5 |
| Life sciences | 11 |
| Marketing | 1 |
| Materials science | 8 |
| Mathematics | 3 |
| Mechanic engineering | 19 |
| Medical | 9 |
| Metallurgy | 32 |
| Microsoft | 49 |
| Natural sciences | 2 |
| Nuclear physics | 1 |
| Patents | 6 |
| Physical sciences | 5 |
| Politics | 1 |
| Power electronics | 3 |
| Power lines | 6 |
| Power system protection | 1 |
| Radio | 12 |
| Research and development | 1 |
| Satellite communications | 3 |
| Social science | 1 |
| Statistics | 3 |
| Technology | 1 |
| Telecommunications | 6 |
| Telegraphy | 1 |
| Telephony | 2 |
| Textile industry | 3 |
| Trade unions | 1 |
| Transformers | 7 |
| Transport | 32 |
| Vacuum tubes | 1 |
| Work flow | 2 |
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