concave glass 中文意思是什麼
concave glass
解釋
凹面玻璃-
Renaissance craftsmen, moreover, would have faced severe technical challenges in silvering and sealing a concave mirror, which required the application of hot tar and pitch on the outside of the glass
文藝復興時代的工匠在塗銀與裝置凹面鏡時,還要面對更多艱難的技術挑戰,那需要在玻璃表面施予滾燙的焦油與瀝青。 -
To my knowledge, no such concave mirrors made by reversing a glass sphere survive in museum collections, and no contemporary documentary evidence indicates that anyone made concave mirrors by reversing blown glass spheres
據我所知,目前博物館里,沒有任何利用玻璃球內面製造的凹面鏡,也沒有任何那個時代的文件證據指出,有人製造過利用玻璃球內面做成的凹面鏡。
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