英语词汇focal length怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	focal length
释义	focal length (also focal distance), distance between the centre of a mirror or a lens and its focus 焦距.
随便看	memoir memorable memorably memorandum memorial Memorial Day memorize memory memsahib men menace menage menage a trois menagerie mend mendacious mendaciously mendacity Mendelian mender mendicant mending menfolk menial meningitis

英汉双解词典包含38652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。