焦距长度 Focal length ; Focal distance length ; Lens focal length
总焦距长度 overall focal length
可变焦距长透镜 Variable Focal Length Lenses
长焦距镜头 Telephoto lens ; tele lens ; long focal lengh lenses ; [光] [摄] long-focus lens
最长焦距 Tele
长焦距透镜 long-focus lens ; lens long-focus ; long focal lens
长焦距 long focus ; Long Lens ; IOX ; Long focal
镜头焦距长 TELE
长焦距物镜 long-focal length lesn ; [光] [摄] long-focus objective
长焦距照相镜头 long focal length camera lens
焦距长底随透镜的厚度而变化。
该系统具有结构简单、质量轻、口径大、焦距长、失真小以及良好温度适应性等特点。
Through the system optimization, the analysis of aberration and differential thermal, the designed system is simple, light weight, large aperture, long focal, and good temperature adaptability.
先前的一张焦距短，第二张他用了长焦。
For the first shot he used a shorter focal length and the second shot he used a longer one.
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