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A typical lens has a focal length ( f ) of 625 mm.是什么意思？

A typical lens has a focal length ( f ) of 625 mm.

常见镜头的焦距 ( f ) 为625毫米.

相关词汇
typical lens has focal length of mm

typical

adj. 典型的，特有的或特别的，代表性的；

lens

n. 透镜，镜头，眼睛中的水晶体，隐形眼镜，汽车的灯玻璃；

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

focal

adj. 焦点的，有焦点的，集中在点上的，病灶的，病灶性的；

length

n. 长度，长，时间的长短，（语）音长，一段，一节；

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

mm

abbr. =megameter，=millimeter，=millimicron；
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