bn:00000965n
Noun Concept
Categories: Acorns, Vacuum tubes
EN
acorn tube
Definitions
Relations
Sources
EN
An acorn tube, or acorn valve, refers to any member of a family of VHF/UHF vacuum tubes starting just before World War II. Wikipedia
Family of VHF/UHF vacuum tubes Wikidata
WordNet 3.0 & Open English WordNet
Wikipedia
Wikidata