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Neutralfilter
n
anal.chem.
neutral-density filter
;
grey filter
astr.
neutral medium
construct.
neutral light filter
opt.
density grey filter
;
neutral density filter
(commonly used as an attenuator)
phys.
neutral absorber
;
neutral density filter
;
neutral filter
;
neutral gray nonselective filter
;
nonselective absorber
;
nonselective filter
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