...一个临界线，小于50临界线的光学玻璃材质叫做Flint glass（火石玻璃），大于50临界线的光学玻璃材质叫做Crown glass（冕牌玻璃），通常我们会利用这两种材质的搭配达到消色差作用。
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barium crown glass 钡冕玻璃
zinc crown glass [玻璃] 锌冕玻璃
lanthanum crown glass 镧冕玻璃 ; 镧冕牌玻璃
fluor crown glass 氟冕玻璃 ; 氟冕光学玻璃
long crown glass 长冕玻璃
phosphate crown glass 磷酸盐冕玻璃
optical crown glass 冕光学玻璃
soft crown glass 软晚冕牌玻璃
barium phosphate crown glass 磷酸钡冕玻璃
以上来源于: WordNet
N → another name for optical crown
Unlike in a normal crown court case, they did not have to sit behind the glass of the dock.
和一般刑事法庭不同，这次他们没有坐在被告席的玻璃后面。
Unlike in a normal crown court case, they did not have to sit behind the glass of the dock. Instead they sat behind their barristers.
和一般刑事法庭不同，这次他们没有坐在被告席的玻璃后面，而是躲在他们的律师叔叔后面。
Made from gold-plated silver and - rather unusually - 'gems' made from glass and fish scales, the crown was never designed to be worn and is more of a symbolic piece.
这顶王冠由镀金白银和非常普通的玻璃、鱼鳞“珠宝”制成，并非为佩戴而设计，更像是一件象征性珠宝。
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