de·vit·ri·fy /(ˌ)diˈvɪtrəˌfaɪ/
(vt.)除去玻璃光澤,使不透明
De·vit·ri·fy v. t. To deprive of glasslike character; to take away vitreous luster and transparency from.
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devitrify
v 1: become crystalline
2: make (glassy materials) brittle or opaque
[also: devitrified]