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|
frecuencia : 1965 phrases in 67 subjects |
| Agriculture | 7 |
| Antennas and waveguides | 29 |
| Astronautics | 3 |
| Automated equipment | 14 |
| Automatic control | 6 |
| Chemistry | 5 |
| Communications | 460 |
| Computer numerical control | 7 |
| Cultural studies | 2 |
| Earth sciences | 85 |
| Economy | 7 |
| Electric machinery | 2 |
| Electric motors | 5 |
| Electric traction | 5 |
| Electricity generation | 2 |
| Electronics | 651 |
| Energy industry | 4 |
| Environment | 4 |
| Finances | 2 |
| General | 16 |
| Health care | 22 |
| Industry | 16 |
| Information technology | 126 |
| International Monetary Fund | 1 |
| Labor law | 2 |
| Law | 1 |
| Life sciences | 18 |
| Magnetics | 6 |
| Mathematics | 42 |
| Measuring instruments | 18 |
| Mechanic engineering | 12 |
| Medical | 46 |
| Metallurgy | 21 |
| Microsoft | 11 |
| Municipal planning | 1 |
| Natural sciences | 10 |
| Nuclear physics | 1 |
| Obsolete / dated | 2 |
| Packaging | 2 |
| Patents | 1 |
| Pharmacy and pharmacology | 3 |
| Physical sciences | 8 |
| Physics | 2 |
| Piezoelectric crystals | 36 |
| Plastics | 1 |
| Power electronics | 2 |
| Power lines | 9 |
| Power system protection | 1 |
| Radio | 46 |
| Reliability | 6 |
| Resins | 1 |
| Satellite communications | 2 |
| Scientific | 1 |
| Semiconductors | 2 |
| Sound recording | 3 |
| Statistics | 64 |
| Technology | 32 |
| Telecommunications | 4 |
| Telegraphy | 5 |
| Telephony | 5 |
| Textile industry | 5 |
| Thermal Energy | 10 |
| Transport | 34 |
| Vacuum tubes | 1 |
| Video recording | 3 |
| Welding | 1 |
| Work flow | 3 |
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