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| linear system | |||
| sistema lineal: 21 phrases in 11 subjects |
| Communications | 2 |
| Computer numerical control | 1 |
| Electronics | 4 |
| Fishery fishing industry | 1 |
| General | 1 |
| Information technology | 5 |
| Meteorology | 1 |
| Natural sciences | 1 |
| Scientific | 1 |
| Sound recording | 2 |
| Transport | 2 |