vacuum tube /ENG-ELECTRICAL/
[DE] Geissler' sche Roehre; Vakuumroehre
[EN] vacuum tube
[FR] tube de Geissler; tube à vide poussé
vacuum tube,valve /ENG-ELECTRICAL/
[DE] Ventil
[EN] vacuum tube; valve
[FR] soupape; valve
electronic valve,vacuum tube,vacuum valve /ENG-ELECTRICAL/
[DE] Vakuumröhre
[EN] electronic valve; vacuum tube; vacuum valve
[FR] tube à vide