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| départ de gaz; écoulement du gaz; écoulement gazeux | |||
| évent des gaz | |||
| extraction des gaz | |||
| отвод газа: 7 phrases in 4 subjects |
| Environment | 1 |
| Medical appliances | 1 |
| Natural resourses and wildlife conservation | 4 |
| Technology | 1 |
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