 |
| |||
| operations manual; Flight Operation Manual | |||
| manual of operations; operation manual | |||
|
manuel d'exploitation : 12 短语, 2 学科 |
| 航空 | 10 |
| 运输 | 2 |
|
| |||
| operations manual; Flight Operation Manual | |||
| manual of operations; operation manual | |||
|
manuel d'exploitation : 12 短语, 2 学科 |
| 航空 | 10 |
| 运输 | 2 |