compulsory ifr flight (qbi) meaning in English
强制仪器飞航
Related Words
- ifr conditions
- compulsory slaughter
- compulsory contribution
- compulsory auction
- compulsory reserve
- compulsory decantation
- compulsory liquidation
- compulsory reporting
- compulsory retirement
- compulsory membership
- compulsory genetic counselling
- compulsory health examination
- compulsory inscribing
- compulsory inspection