symmetrical doublet lens

Initial boundary value problems for a class of semilinear symmetric hyperbolic systems with discontinuous data;

一类半线性对称双曲组的强间断初边值问题

symmetrical design

﹝镜头﹞对称式设计

air-spaced double anastigmat

双分离对称消像散镜头

convertible lens

并合镜头，通常是指称式镜头，可分开使用

symmetrical (achromat)lens

对称式(消色差)透镜

Novel Design Method of Symmetric Bootlace Lens With Minimum Phase Errors Based on Genetic Algorithm

一种新的低相位误差对称Bootlace透镜设计方法

Design of 2.5×Zoom Camera Lens within Cell Phone

2.5倍光学变焦内置式手机摄像镜头的设计

The Study of Design of High Pixel Cell Phone Camera -1.3 Million-pixel Lens;

高像质手机镜头设计技术研究-130万手机镜头

Design of aspheric lens in helmet-mounted LLL night-vision system

头盔式单目微光夜视仪中非球面物镜系统的设计

Hardware Design of Embedded Rotationally Symmetric Triangulation Sensor

嵌入式旋转对称三角测量传感器硬件设计

Parameterized Serialization Design for An Unsymmetrical Double-ring Planetary Gear Reducer

非对称双环式行星减速器的参数化系列设计

inverted telephoto lens =retrofocus Iens

广角镜头之一种(扩大后组焦距的设计)

retrofocus lens = inverted telephoto lens

广角镜头之一种，扩大后组焦距的设计

System Design and Software Development for MTF Testing of a Lens;

测量镜头MTF的系统设计及软件开发

Study on Optical Design of Large Working Area F-Theta Lens;

大工作面F-Theta镜头的研制设计

Design of WFOV optical lens for CCD camera;

CCD摄像机大视场光学镜头的设计

The Design and Implementation of ZOOM Lens' Driver Control System

ZOOM镜头驱动控制系统的设计与实现

Design of NIR Zoom Camera with High Resolution

高解析近红外一体摄像机镜头的设计

Design of a Compactness and High Resolution Lens System for Mobile Phone

结构简洁、高分辨率手机镜头的设计