1 Results for -optical crown-

/อ๊า ผึ ถิ เขิ่ล คราว น/     /ˈɑːptɪkəl krˈaʊn/

หรือค้นหา: -optical crown-, *optical crown*

WordNet (3.0)

optical crown

(n) optical glass of low dispersion and low refractive index, Syn. optical crown glass, crown glass

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