optical contact sound of pronunciation

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optical contact in Hindi：प्रकाशिक संपर्क; प्रकाशीय संपर्क

Neighbors

"optical communication" sound, "optical comparator" sound, "optical condenser" sound,

"optical constancy" sound

"optical constant" sound

"optical control" sound

"optical corrections" sound

"optical cross-section" sound

"optical crown glass" sound