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| |||
| drawing ventilation | |||
| extract ventilation | |||
| extract ventilator | |||
| blow off ventilation; ventilation by extraction; blowoff ventilation | |||
| |||
| induced draught (draft) | |||
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抽 气通风 : 24 phrases in 6 subjects |
| Agriculture | 1 |
| Architecture | 2 |
| Automobiles | 1 |
| General | 1 |
| Metallurgy | 1 |
| Technology | 18 |
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