a type of flattened glass used in watch-making

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الإنجليزية - الإنجليزية

تعريف a type of flattened glass used in watch-making في الإنجليزية الإنجليزية القاموس.

A type of flattened glass used in watch-making.
lunette

Lunette and double lunette glasses are generally sized in quarters; crystals and thin flat lunettes for hunters in eighths.