单词 | Aldis lens |
释义 | Aldis lensOptics (now chiefly historical ) noun A kind of anastigmatic compound lens that is a doublet consisting of a front lens which is convex on one side and concave on the other and a back lens which is convex on both sides. OriginEarly 20th century; earliest use found in Photogram. |
随便看 |
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。