The filtration system was a system aboard Constitution-class starships.
In 2267, a crewman noted that the USS Constellation's filtration systems were down, following an attack by the planet killer. (TOS: "The Doomsday Machine")
The filtration system was a system aboard Constitution-class starships.
In 2267, a crewman noted that the USS Constellation's filtration systems were down, following an attack by the planet killer. (TOS: "The Doomsday Machine")