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| |||
| air penetration | |||
| air permeation | |||
| air leak; air leakage; pervious to air | |||
| air infiltration | |||
| 空气 渗透: 20 phrases in 7 subjects |
| Bridge construction | 1 |
| Engineering geology | 1 |
| Mining | 1 |
| Oil / petroleum | 2 |
| Refrigeration | 1 |
| Technology | 12 |
| Wind Energy | 2 |
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