虚拟的数据库管理系统
“铁路选线工程数据库管理系统”作为“虚拟环境铁路选线设计系统”的一个子系统，既是它的信息储存基地，又是它的信息处理工具。
As an important part of virtual environment railway location design system, railway location engineering database management system is base of storing information and tool of dealing with information.
“铁路选线工程数据库管理系统”作为“虚拟环境铁路选线设计系统”的一个子系统，既是它的信息储存基地，又是它的信息处理工具。
As an important part of virtual environment railway location design system, railway location engineering database management system is base of storing information and tool of dealing with information.
应用推荐