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| sistema dinámico | |||
| dynamic system: 15 phrases in 12 subjects |
| Automatic control | 1 |
| Computer numerical control | 1 |
| Electronics | 1 |
| Environment | 1 |
| General | 1 |
| Information technology | 2 |
| Mechanic engineering | 2 |
| Microsoft | 1 |
| Natural sciences | 2 |
| Radio | 1 |
| Scientific | 1 |
| Transport | 1 |
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