air locking meaning in Hindi

Examples

1. Tunnelling machines - air locks - safety requirements
2. Tunnelling machines - air locks - safety requirements
3. Air regulation systems in mining - air locks - building and operation
4. Tunnelling machines - air locks - safety requirements ; german version en 12110 : 2002
5. Power assisted air gates - travel - way air locks - type doors with pressure
6. Air lock feeder
7. Air lock valve
8. Air lock tank
9. Air regulation systems in mining - belt - conveyors - way air locks - dimensions , identifications , requirements and testing
10. Air regulation systems in mining - wing air locks for travelling tracks - double - wing type doors with pressure reduction