三星256MB~4GB Nand Flash pdf资料-Samsung 256MB ~ 4GB Nand Flash pdf information

基于MAPGIS K9 IMS的税务征收管理系统设计方案，真实案例。-MAPGIS K9 IMS-based tax collection and management system design, the real case.

用于计算单透镜的球差、像方焦距、物方焦距、主面距离以及前后球面的曲率半径。-Calculated for single-lens spherical aberration, like the square focal length, the object side focal length, distance and radius of curvature of the main surface of the sphere around.