1.
autofocus zoom lens
自动聚焦变焦距镜头
2.
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快速变焦距手术显微镜
3.
rear-controlled zoom lens
背面调整变焦距透镜
4.
best image plane of zoom lens
变焦距物镜的最佳像面
5.
image plane displacement of zoom lens
变焦距物镜像面位移
6.
manual zoom lens
(镜头)手控可变焦距透镜
7.
auto iris zoom lens
自动光圈变焦距镜头
8.
zoom stereomicroscope
快速变焦距立体显微镜
9.
Performance Analysis of the Elliptic Beam Ring-focus Antenna with a Variable Focal Distance
椭圆波束变焦距环焦天线的性能分析
10.
universal zoom operation microscope
通用型变焦距手术显微镜
11.
One of Visible Video Zoom System Research;
一种可见光变焦距电视光学系统研究
12.
Lifting up her camera, she took out a zoom lens and put it on.
她举起照相机，取出一个变焦距镜头换上。
13.
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
14.
The wearer of such glasses could change the focus by sliding a switch along one arm of the frame.
带这种眼镜的人通过调整一只眼镜腿上的滑动开关可以改变焦距。
15.
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
16.
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﹞
17.
The focal length differs with the thickness of the lens
焦距长底随透镜的厚度而变化。
18.
Having three focal lengths.
三焦距的有三个焦距的