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单词
focal length
释义
focal length
noun
countable
physics
UK
Word Forms
singular
focal length
plural
focal lengths
DEFINITIONS
1
1
the distance from the centre of a
lens
or mirror to its focal point
Synonyms and related words
Terms in Physics
centre of gravity
density
focal length
focal length
noun
countable
physics
US
Word Forms
singular
focal length
plural
focal lengths
DEFINITIONS
1
1
the distance from the center of a
lens
or mirror to its focal point
Synonyms and related words
Terms in Physics
density
focal length
focal point
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open-air
open-and-shut case
open bar
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open door policy
open-door policy
open doors
open-ended
opener
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open-faced sandwich
open fire
open-handed
open-heart surgery
open house
opening
opening hours
opening night
opening time
open invitation
open its/the doors
open kimono
open letter
英语词典包含67175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。
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更新时间：2026/3/18 18:29:54