1.
Some telescopes do not use a lens at the front. They use a curved mirror at the back. A curved mirror is better than a lens in some ways.
一些望远镜的前部不用透镜，而在后面装上一个曲面镜，曲面镜在某些方面要比透镜好。
2.
and if a single curved glass would distort nature,
何况一片曲面镜就可歪曲自然，
3.
All three of them use mirror, not lenses at the front.
这三台望远镜前部用的都是曲面镜而不是透镜。
4.
single curved glass would distort nature, how much more would a pair of them ?
如果单一的曲面镜会歪曲自然，那么一对曲面镜对自然的歪曲又会多大呢？
5.
curved glass was the popular contrivance,
曲面镜一直是一种常用装置，
6.
how much more would a pair of them?
那么伽利略的两片曲面镜对自然的歪曲又该多大呢？
7.
A curved mirror distorts the features.
弯曲的镜面使容貌变形。
8.
Having greater curvature on the concave side than on the convex side.Used of a lens.
凹凸的凹面曲率大于凸面曲率的。用于指透镜
9.
The curvature of the film is concentric with the mirror behind the meniscus.
胶片的曲率是和弯月透镜后面的反射镜同心的。
10.
glass ,curved for sun glasses, not optically worked
曲面,用作太阳镜,未经光学加工
11.
Freeform Lens Design for LED Illmination
实现LED照明的自由曲面透镜设计
12.
The curved glass lenses at each end of the telescope acted like prisms.
望远镜两端的曲面玻璃镜头起到了三棱镜的作用。
13.
a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror.
具有抛物面主镜和双曲面次镜的一种折射式望远镜；光线被集中到主镜中心的孔径。
14.
A research on the characteristic of the refraction-reflection system composed of rotational conicoid thin lens and flat mirrors
旋转二次曲面薄透镜与平面镜组成的折反光学系统的性质研究
15.
Having greater curvature on the convex side than on the concave side.Used of a lens.
凸凹的凸面比凹面曲度更大的。用来指透镜
16.
THE LOCATION FIXING OF THE BASIC POINT AND BASIC SURFACE OF THE ROTATIONAL CONICOID LENS;
旋转二次曲面透镜基点和基面的位置确定
17.
Application of Surface Fitting on Automobile Rearview Mirror
曲面拟合技术在汽车后视镜理论建模中的应用
18.
a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted.
穿过曲面透镜中心的光线不会反射和折射的线。