| • ventilation and exhaustion | |
| संवातन: ventilating system ventilation system ventilation | |
| एवं: OR And and | |
| निर्वातन: evacuation exhaustion vacuumisation | |
संवातन एवं निर्वातन अंग्रेज़ी में
[ samvatan evam nirvatan ]
| • ventilation and exhaustion | |
| संवातन: ventilating system ventilation system ventilation | |
| एवं: OR And and | |
| निर्वातन: evacuation exhaustion vacuumisation | |
