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bn:01265334n
Noun Concept
PT
circuitos de via
EN
A track circuit is an electrical device used to prove the absence of a train on rail tracks to signallers and control relevant signals. Wikipedia
Relations
Sources
IS A
EN
railway vacancy detection
EN
current circuit
DISCOVERER OR INVENTOR
William Robinson
FACET OF
ferrovia
Wikipedia Translations
PT
circuitos de via

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