An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشهشناختی اخترشناسی-اخترفیزیک
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entrance slit
شکاف ِ درآیش
šekâf-e darâyeš
Fr.: fente d'entrée
A thin slit in an opaque screen by which light enters a spectrograph.
See also:
→
entrance
; →
slit
.
