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gravity circulation | |||
natural circuit; natural cycle; natural air circulation | |||
natural circulation | |||
| |||
natural circulation |
自 然循环: 48 phrases in 12 subjects |
Agriculture | 2 |
Automobiles | 2 |
Chemistry | 1 |
Ecology | 1 |
Electronics | 11 |
Finances | 1 |
Hydroelectric power stations | 2 |
Metallurgy | 2 |
Nautical | 2 |
Refrigeration | 1 |
Solar power | 1 |
Technology | 22 |