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| ventilating air | |||
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通风空气 : 25 phrases in 12 subjects |
| Animal husbandry | 1 |
| Automobiles | 2 |
| Aviation | 3 |
| Business | 1 |
| Chemistry | 1 |
| Consulting | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Oil processing plants | 1 |
| Refrigeration | 2 |
| Technology | 9 |
| Wind Energy | 1 |
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