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conmutacion : 721 phrases in 36 subjects |
| Antennas and waveguides | 2 |
| Automated equipment | 3 |
| Automatic control | 7 |
| Communications | 204 |
| Computer numerical control | 7 |
| Cybernetics | 2 |
| Earth sciences | 8 |
| Economics | 2 |
| Electric motors | 1 |
| Electric traction | 5 |
| Electronics | 235 |
| General | 8 |
| Human rights activism | 1 |
| Industry | 2 |
| Information technology | 123 |
| Insurance | 1 |
| Law | 4 |
| Magnetics | 2 |
| Measuring instruments | 4 |
| Mechanic engineering | 7 |
| Metallurgy | 1 |
| Microsoft | 19 |
| Natural sciences | 7 |
| Patents | 2 |
| Physical sciences | 2 |
| Power electronics | 15 |
| Power lines | 1 |
| Radio | 1 |
| Satellite communications | 1 |
| Semiconductors | 1 |
| Sound recording | 1 |
| Technology | 1 |
| Telecommunications | 27 |
| Telegraphy | 7 |
| Transformers | 1 |
| Transport | 6 |