英语词汇principal focal distance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	principal focal distance
释义	principal focal distance 简明释义主焦距网络释义 1 ?主焦距 ... principal focal distances 释义：主焦距 principal focal distance 释义：主焦距 anterior focal distance 释义：主焦距,前焦距 ... 短语 1 anterior principal focal distance 前主焦距 2 primary principal focal distance 第一主焦距 3 secondary principal focal distance 第二主焦距双语例句 1 Focal length: The distance between the centre of a lens and its principal focus. 焦距：镜头中心与其主焦点的距离。 2 Focal length is the distance between optical centre and principal focus. 焦距就是镜片中心和焦点之间的距离。
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