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bn:17256445n
Noun Concept
EN
electronic vacuum devices
EN
Comprising gas-filled, vacuum, cathode-ray, X-ray tubes and other vacuum devices Wikidata
Definitions
Relations
Sources
EN
Comprising gas-filled, vacuum, cathode-ray, X-ray tubes and other vacuum devices Wikidata
IS A
electrical device
appliance
HAS PART
cathode-ray tube
tube
gas-discharge tube
X-ray tube
Wikidata
EN
electronic vacuum devices

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