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| thermocirculation naturelle; circulation naturelle; circulation par gravité; circulation par thermosiphon | |||
| circulation en thermosiphon | |||
| système de gravité | |||
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gravity system : 18 phrases in 8 subjects |
| Construction | 3 |
| Economics | 1 |
| Energy industry | 3 |
| Environment | 1 |
| Mechanic engineering | 4 |
| Technology | 2 |
| Transport | 3 |
| Water resources | 1 |