1.
Study on Optical Design of Large Working Area F-Theta Lens;
大工作面F-Theta镜头的研制设计
2.
The design of the f-theta zoom lens with CO_2 laser marking machines
CO_2激光打标机变焦f-theta透镜的设计
3.
YAG Laser Marking Machines Zoom f-theta-scanning System
YAG激光打标机变焦f-theta镜扫描系统
4.
Level camera on tripod head. Set lens to f/8.
把相机在架顶放平,镜头调整到f/8。
5.
A typical lens has a focal length(f)of 625 mm.
常见镜头的焦距（f）为625毫米。
6.
Design of hybrid refractive-diffractive f-θ lens with multi-wavelength,large working area
多波长、大工作面折-衍混杂f-θ镜头设计
7.
They appear, they disappear.
镜头闪现，镜头又消失了。
8.
a telephoto lens
远距照相镜头, 摄远镜头
9.
manual zoom lens
(镜头)手控可变焦距透镜
10.
R radial lens distortion
【光】径向镜头变形
11.
fast motion
快动作镜头(摄影)
12.
symmetrical design
﹝镜头﹞对称式设计
13.
long focus lens
长焦距（望远）镜头
14.
Endoscopic analysis of the ~(18)F-FDG accumulations in gastrointestinal tract after PET-CT examinations
经PET-CT检测胃肠道~(18)F-FDG高摄取的内镜分析
15.
The Application of ~(18)F-FDG PET/CT in Head and Neck Neoplasms
~(18)F-FDG PET/CT在头颈部肿瘤中的应用
16.
The ratio of the focal length of a lens or lens system to the effective diameter of its aperture.
F值物镜或物镜系统的焦距与入射光孔直径之比
17.
the lens or system of lenses nearest the object being viewed.
离被观察物体最近的镜头或镜头系统。
18.
Cut from one shot to another.
从一个镜头切换到另一个镜头