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Sperrfilter n -s, =
chem.	cutoff filter
commun., el.	wave-trap
construct.	semi-pervious zone; transition zone
earth.sc., industr., construct.	cut-off filter
el.	notch filter
microel.	band-elimination filter; band-reject filter
microsc.	barrier filter; selective filter; stopping filter; selection filter
phys.	elimination filter; exclusion filter; suppression filter
tech.	bandstop filter; band-stop filter; rejection filter; stop filter
tech., el.	band elimination filter; band rejection filter; band-eliminating filter

Sperrfilter: 6 phrases in 4 subjects

Earth sciences	1
Electronics	2
Magnetics	1
Medical appliances	2