1.
"A convex lens causes rays to converge on a single point, the focal point."
会聚透镜使光线会聚于一点,即焦点。
2.
It's an easy matter to observe chromatic aberrations, with a thick, simple converging lens.
用一厚的简单会聚透镜很容易观察色差。
3.
Since these rays do not actually meet, they cannot form an image without a condensing lens of sort.
由于这些光线实际上不相交，如果不用某种会聚透镜的话，它们是不能成像的。
4.
A planoconvex lens used to concentrate light.
凸透镜用来聚光的凸镜
5.
Relation Between Gathering and Scattering of Thick Lens and Its Thickness;
厚透镜的会聚性和发散性与其厚度的关系
6.
A convex lens is used to concentrate rays of light.
凸透镜用于聚集光线。
7.
electron lens:any of various devices that use an electric or a magnetic field to focus a beam of electrons.
电子透镜:通过一个电场或一个磁场来使一束电子会聚的一种装置.
8.
A mirror, lens, or combination of lenses used to gather light and direct it upon an object or through a projection lens.
聚光器用于聚光并将光引向某物体或通过一凸透镜组的镜子、透镜或透镜组
9.
Analysis and Measurement of Spot Focusing Lens Antenna Resolution
点聚焦透镜天线分辨率的分析与测量
10.
He focused the sun's rays on a paper with a burning-glass.
他用一面凸透镜把阳光聚焦在纸上。
11.
Research on Manufacture and Optimized Methods of GRIN-rod Lenses;
自聚焦透镜制造技术与性能优化研究
12.
Coupler Loss of Self-Focusing Lens Used in Optical Communication
光通信用自聚焦透镜耦合损耗的研究
13.
The focal length of the conelensing lens should be such that the image of the source just fills the projecting lens.
聚光透镜的焦距应使光源的像正好照满放映透镜。
14.
a concave lens [mirror]
凹透镜 [凹面镜]
15.
He focused the sun's ray on a piece of paper with a burning-glass.
他用一面凸透镜把阳光在纸上聚成焦点。
16.
The beam of flashlight diverges, but it can be refocused with lenses.
一个发散的闪光灯束可以用透镜重新聚焦。
17.
ON ABERRATION THEORY OF THE COMBINED ELECTROMAGNETIC FOCUSSING CATHODE LENSES
关于电磁复合聚焦阴极透镜的象差理论
18.
Optical Parameters Of Selfoc Lens Measured by Modified Spot Way
改进的斑点法测量自聚焦透镜光学参数