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.
In this case the rays obviously do not converge.
此时，光线显然不会聚。
3.
focused light rays can set something afire.
聚焦的光线会让东西烧起来。
4.
About the Teaching of the Convergence and the Divergence of Rays with the Optical Instruments in a Junior Middle School;
谈 (初中 )光学仪器对光线的会聚作用与发散作用的教学
5.
A convex lens is used to concentrate rays of light.
凸透镜用于聚集光线。
6.
(of light rays) converging on a point.
（指光线）聚集在一个点上。
7.
linear polysiloxane cladding fiber
线性聚硅氧烷包层光纤
8.
Notice that in all cases, the rays either diverge from or converge toward the foci.
注意在所有的情况下，光线不是从焦点发散就是会聚到焦点。
9.
Of, relating to, or being an image formed by light rays that converge in space.
实像的属于或与空间会聚光线形成的影像有关的
10.
illuminate with a spotlight, as in the theater.
在剧院，用聚光灯把光线集中。
11.
When viewed using a bright lamp, the beams of light can be seen as spectra of colors.
在明亮的聚光灯光源下，光束会还原为光谱色彩。
12.
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。
13.
a transparent optical device used to converge or diverge transmitted light and to form images.
能够聚合或发散光线形成图像的透明光学装置。
14.
All-Optical Switching in Polymer Pumped by a Beam with Linear-Circular Double Polarization
线-圆双偏振态光束抽运有机聚合物全光开关
15.
Receiving Antenna of Optical Communication Based on Compound Parabolic Concentrator
基于复合抛物面聚光器的光通信接收天线
16.
Curtains will soften the light.
窗帘会使光线柔和些。
17.
The Electronic Properties and Nonlinear Optical Susceptibility of Polyethylene in Ground State;
聚乙炔基态的线性和非线性光学极化率
18.
filament lamp (other than flash bulbs, infrared and ultraviolet lamps and sealed-beam lamp units)
白炽灯（闪光灯、红外线和紫外线灯以及聚光灯组除外）