fire vent การใช้

Typically, little speakers incorporate rear-firing vents, or ports, that reinforce bass performance.
During the event, the building was struck by lightning, causing the fire vents to open ( and then get stuck open ), and it rained inside the building.
An electrically fired vent tube is used to initiate firing of the main armament rounds . ( The main armament ammunition is thus described to be " three part ammunition ", consisting of the projectile, charge and vent tube . ) The separation of ammunition pieces also aids in ensuring lower chances of ammo detonation.