1.
The Study of Measuring Convex lens Focal Distance with CCD;
用CCD测量凸透镜焦距实验的研究
2.
Error Analysis and Ways to Make fewer in Measuring Focal Distance of Convex Lens;
凸透镜焦距测量的误差分析和减小方法
3.
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
4.
manual zoom lens
(镜头)手控可变焦距透镜
5.
rear-controlled zoom lens
背面调整变焦距透镜
6.
short focal length (high aperture) lens
短焦距(大孔径)透镜
7.
Measurement of optical surface and foci of long focal length lens by CGH
计算全息法测量长焦透镜面形和焦距
8.
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。
9.
The focal length differs with the thickness of the lens
焦距长底随透镜的厚度而变化。
10.
(physiology) the automatic adjustment in focal length of the lens of the eye.
（生理学）用眼的透镜来自动调节焦距。
11.
Measurement of Long Focal Length of Lens Utilizing Talbot Effect and Morie Technique;
利用泰伯—莫尔法的透镜长焦距测量
12.
Further study on thin-lens focal length measurement experiment;
再议对薄透镜焦距测定的进一步研究
13.
Improvement on a Device in the Experiment of the Measurement of the Thin Lens Focallength;
“薄透镜焦距的测定”实验装置的改进
14.
A planoconvex lens used to concentrate light.
凸透镜用来聚光的凸镜
15.
Research on Focal Depth in the Experiment of Thin Lens' Focal Length Measurement
薄透镜焦距测量实验中焦深问题的研究
16.
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。
17.
PLANO-CONVEX SELFOC LENSES FOR COUPLING LASER DIODE TO FIBER
耦合半导体光源和光纤的平凸自聚焦透镜
18.
meniscus (shaped) lens
凹凸透镜，弯月形透镜