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| sistemas de calefacción | |||
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| sistema de calefacción | |||
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heating systems : 42 phrases in 12 subjects |
| Earth sciences | 7 |
| Electronics | 6 |
| Energy industry | 3 |
| Environment | 3 |
| Food industry | 1 |
| General | 4 |
| Industry | 1 |
| Life sciences | 1 |
| Materials science | 2 |
| Mechanic engineering | 7 |
| Natural sciences | 1 |
| Transport | 6 |
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