请输入您要查询的英文单词:

 

单词 focal length
释义 focal lengthn. (also 亦作 focal distance) 1 the distance between the centre of a lens or curved mirror and its focus 焦距(透镜或曲面镜中心至其焦点的距离) 2 the equivalent distance in a compound lens or telescope (复合透镜或望远镜的)等效焦距
随便看

 

英汉双解词典包含94788条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/4/16 3:50:26