Reader's Dictionary
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Urdu Meanings, Pronounciation and Synonyms:

optical crown glass

(Pronunciation -تلفظ سنیۓ ) US:
Slow
Normal
Noun: optical crown glass
1. optical crown glass [ Synonyms: crown glass, optical crown]
Optical glass of low dispersion and low refractive index

Lexical Analysis

Generic Words:
optical glass

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