1.
manual zoom lens
(镜头)手控可变焦距透镜
2.
rear-controlled zoom lens
背面调整变焦距透镜
3.
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
4.
The focal length differs with the thickness of the lens
焦距长底随透镜的厚度而变化。
5.
short focal length (high aperture) lens
短焦距(大孔径)透镜
6.
autofocus zoom lens
自动聚焦变焦距镜头
7.
Study on Liquid Lens Technology and Its Application in Micro Zoom Optical System
液体透镜技术及其在微型变焦距系统中的应用
8.
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
9.
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快速变焦距手术显微镜
10.
best image plane of zoom lens
变焦距物镜的最佳像面
11.
image plane displacement of zoom lens
变焦距物镜像面位移
12.
auto iris zoom lens
自动光圈变焦距镜头
13.
zoom stereomicroscope
快速变焦距立体显微镜
14.
(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。
15.
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
16.
The Study of Measuring Convex lens Focal Distance with CCD;
用CCD测量凸透镜焦距实验的研究
17.
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
18.
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