1.
Just as a double convex lens enlarges, so a double concave lens reduces.
正象双凸透镜可以放大那样，双凹透镜也可以缩
2.
Just as a double convex lens enlarges, so a double concave lens reduces
正象双凸透镜可以放大那样，双凹透镜也可以缩小。
3.
a concave lens [mirror]
凹透镜 [凹面镜]
4.
meniscus (shaped) lens
凹凸透镜，弯月形透镜
5.
air-spaced doublet
双不胶透镜; 双分离透镜; 双分透镜; 空气隙双合透镜; 分离式双透镜
6.
large concave mirror produces image that is magnified by the eyepiece.
由目镜产生放大图像的大的凹透镜。
7.
aberration of the concave mirror is reduced by a meniscus lens.
用半月板镜头减少凹透镜的过失。
8.
Shaped like a biconvex lens.
双凸透镜状的形状像双凸透镜的
9.
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
10.
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
11.
flat-top plastic bifocal
平顶塑料双焦点透镜
12.
Some are flared-that is, thicker at the rim than in the center, like a concave lens.
有些呈喇叭形──即边缘较中心厚，类似凹透镜。
13.
A New Method to Measure Optics Parameter of Plano-convex Lens and Plane-concave Lens
一种测定平凸、平凹透镜光学参量的新方法
14.
Concave Microlens Arrays Produced by Femtosecond Laser With HF Acid Etching
飞秒激光和酸刻蚀方法制作凹面微透镜阵列
15.
Study on Modulated Crossed-Beam Near-Field Detection Thermal Lens;
横向双光束调制近场探测热透镜研究
16.
Studies on Coupling System Composed of GRIN Rod Lenses for Double-cladding Planar Waveguides;
双包层波导GRIN棒透镜耦合系统的研究
17.
Spherical lens with binary optical element for visible and UV dual-band optical system
二元球透镜可见/紫外双波段光学系统
18.
The One-Lens and Two-Lens Fractional Fourier Transform System with the Media
含介质的单透镜和双透镜分数傅里叶变换光学系统