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barriera di protezione
med.	Schutzschranke m
met.	Leitschiene f; Radlenker m; Zwangsschiene f
transp.	Absperrung f
transp., construct.	Schutzplanke f; Leitplanke n
barriera di protezione elettrica
el.mach.	elektrische Schutzabdeckung

barriera di protezione: 4 phrases in 2 subjects

Nuclear physics	1
Transport	3