1.
Research on the Image Fusion Method of Wavelet Territory Gradient Criterion Multi-focal Distance
小波域梯度准则多焦距图像融合方法的研究
2.
Multi-focus Image Fusion Algorithm based on Relative Activity Level
基于相对清晰度的多焦距图像融合算法
3.
Having three focal lengths.
三焦距的有三个焦距的
4.
equivalent focal length
当量焦距，等效焦距
5.
Focus-to-film distance(f.f.d)
焦点-胶片距离(焦距)
6.
Their personages or portraits are not standard, they are uncut and out of focus.
他们的人物或肖像多不标准，边幅不剪，焦距模糊。
7.
autofocus zoom lens
自动聚焦变焦距镜头
8.
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
9.
long focus lens
长焦距（望远）镜头
10.
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。
11.
consists of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length.
由许多小镜头排列以制成大直径短焦距的轻型镜头。
12.
Most utilities are eyeing one of three basic designs.
大多数公用事业公司都将目光焦距在三种基本设计上。
13.
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快速变焦距手术显微镜
14.
Only a bit out of focus.
只是焦距有点不对。
15.
One must focus the camera before taking a picture.
拍照之前先要对焦距。
16.
The image is out of focus.
这影像的焦距没调好。
17.
Don't forget to focus the lens.
别忘了调节镜头的焦距。
18.
rear-controlled zoom lens
背面调整变焦距透镜