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blocking signal
commun.	blokkeersignaal n; aftastblokkeersignaal n
el.	blokkeringssignaal n
block signal ['blɔk'sɪgn(ə)l]
transp.	baanvak signalering; bloksein n

blocking signal : 27 phrases in 5 subjects

Communications	14
Electronics	5
General	1
Information technology	1
Transport	6