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zona morta
gen.	dead area
earth.sc., mech.eng.	null region
earth.sc., tech.	dead layer
IT, tech.	dead band
mun.plan., earth.sc.	dead air pocket; dead zone
tech., law, el.	deadband; neutral zone
zona mortado dispositivo de Salter
energ.ind.	death valley

zona morta: 6 phrases in 3 subjects

Earth sciences	2
Electronics	1
Information technology	3