noise certification
| approach flight path
| noise certification | |
| avia. | сертификация по шуму |
| approach flight path | |
| avia. | траектория захода на посадку |
| |||
| сертификация по шуму | |||
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noise certification : 23 phrases in 3 subjects |
| Aviation | 13 |
| Ecology | 9 |
| Technology | 1 |