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| ventilating duct; ventilation groove | |||
| ventilation slot | |||
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| vent slot | |||
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| ventilation slot | |||
| 通风槽: 28 phrases in 6 subjects |
| Automobiles | 5 |
| Electric machinery | 15 |
| Exhibitions | 2 |
| Hydroelectric power stations | 1 |
| Refrigeration | 1 |
| Technology | 4 |
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