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