光學玻璃 (gwong1 hok6 bo1 lei4) — optical glass in Cantonese
gwongˉ¹光hokˍ₆學boˉ¹玻leiˎ₄璃简 光学玻璃
Mandarin Pinyin: guang1 xue2 bo1 li5
Meaning of 光學玻璃
nounoptical glass
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