crown glass

• n. 冕牌玻璃(光学玻璃的一种)

英英释义

Noun:

1. a glass blown into a globe which is later flattened and spun to form a disk

2. optical glass of low dispersion and low refractive index

近反义词

【近义词】

• optical crown glass 冕光学玻璃
• optical crown 光学冕玻璃