1.
Analysis on the Range Focusing Depth of Translational Invariant Bistatic SAR
平移不变模式双基地SAR距离聚焦深度分析
2.
Focus-to-film distance(f.f.d)
焦点-胶片距离(焦距)
3.
autofocus zoom lens
自动聚焦变焦距镜头
4.
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。
5.
back focal distance
【光】后焦距﹝指镜头与菲林间的距离﹞
6.
The flatter the ellipse, the farther apart are the foci, and the farther each focus is from the center .
椭圆越扁平，两焦点之间的距离越远，每个焦点离中心的距离也越远。
7.
horizon focussing
水平聚焦 -电离层的
8.
macro teleconverter
增距式微距附加镜﹝使标准镜头变成微距而保留最近封焦距离﹞
9.
Discussion about Off-Focus Influence on MTF for Long Focus Aerial Camera
长焦距航天遥感相机离焦对传递函数的影响
10.
Research in the Algorithms of Depth from Defocusing Based on Image Processing;
基于图像处理的离焦测距算法的研究
11.
Having three focal lengths.
三焦距的有三个焦距的
12.
equivalent focal length
当量焦距，等效焦距
13.
Study on Digital Image Auto-focusing and Restoration Technology of the Defocused Image
数字图像自动聚焦与离焦模糊复原技术研究
14.
Design, Fabrication and Self-focusing Properties of Varied Line-space Grating
自聚焦变栅距光栅设计、制作及特性研究
15.
They have a focal length, and where an image is formed depends on a combination of the focal length and the distance between the object and the lens.
透镜有焦距，而影像形成的位置，取决于焦距及物体与透镜距离的组合。
16.
We say that a caustic is formed on the surface of the sphere at this distance.
我们说，在这一距离的球面上形成了焦散。
17.
The Effect of Learners' Perception of Language Distance on Foreign Language Anxiety
学习者语言距离的感知对外语学习焦虑的影响
18.
mather's plasma focus apparatus
马瑟型等离子体聚焦装置