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crown optical glass sentence in Hindi

"crown optical glass" meaning in Hindicrown optical glass in a sentence
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  • The Protar is considered the first " modern " lens, because it had an asymmetric formula allowed by the new design freedom opened up by newly available barium oxide, crown optical glasses.

crown optical glass sentences in Hindi. What are the example sentences for crown optical glass? crown optical glass English meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.