网站首页  词典首页

请输入您要查询的词汇:

 

词汇 effective aperture
释义

Definition of effective aperture in English:

effective aperture

noun
Optics
  • The diameter of the widest beam of light incident on an optical system that goes to form an image; also in extended use (e.g. in connection with radio waves or particle beams).

Origin

Mid 19th century; earliest use found in Littell's Living Age.

Definition of effective aperture in US English:

effective aperture

noun
Optics
  • The diameter of the widest beam of light incident on an optical system that goes to form an image; also in extended use (e.g. in connection with radio waves or particle beams).

Origin

Mid 19th century; earliest use found in Littell's Living Age.

随便看

 

春雷网英语在线翻译词典收录了464360条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2000-2024 Sndmkt.com All Rights Reserved 更新时间:2024/12/28 14:33:15