| 单词 | focusing ring |
| 释义 | > as lemmasfocusing ring focusing ring n. a ring on the body of an optical instrument, esp. a camera lens, which is rotated to focus the instrument (typically by adjusting the relative position of the lenses). ΚΠ 1897 Official Gaz. (U.S. Patent Office) 21 Sept. 1879/2 In an opera, or similar glass, the main barrels..provided with focusing-rings. 1918 ‘Klaxon’ H.M.S. —— 44 In a flash he was at his sights, his hands on the focussing-ring and his head close up to the telescope. 2001 Nat. New Eng. Fall 45/2 As the bird approaches, the photographer constantly adjusts the focus by swiveling the focusing ring. < as lemmas |
| 随便看 |
英语词典包含1132095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。