神马作文网focal view
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focal view
光圈影像
参考：In optics, the f-number (sometimes called focal ratio, f-ratio, or relative aperture[1]) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; in simpler terms, the f-number is the focal length divided by the "effective" aperture diameter. It is a dimensionless number that is a quantitative measure of lens speed, an important concept in photography.
参考：In optics, the f-number (sometimes called focal ratio, f-ratio, or relative aperture[1]) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; in simpler terms, the f-number is the focal length divided by the "effective" aperture diameter. It is a dimensionless number that is a quantitative measure of lens speed, an important concept in photography.
focal distan
focal length的意思
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英语翻译Percutaneous biopsy of organs,masses or focal visceral l
View my 那View my posts、View my blog
Signature(s) of the nominated focal point for scope of autho
the nominated focal point for scope of authority这句怎样翻译
in my view中view是什么意思?
a flat view and a threaded view.
Just your view