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sistema de calefacción directa; sistema directo |
direct system : 37 phrases in 13 subjects |
Agriculture | 2 |
Communications | 7 |
Earth sciences | 3 |
Electricity generation | 1 |
Electronics | 12 |
Energy industry | 2 |
Finances | 1 |
General | 2 |
Life sciences | 2 |
Natural sciences | 1 |
Nuclear physics | 1 |
Security systems | 1 |
Transport | 2 |