导航数据库 meaning in Chinese

navigation route database

Roads is recommended to help chinese subject gateways to enhance their browsing and searching functions
国内学科导航数据库向学科信息门户转变需更新网站理念、提高信息质量和增强易用性。
The function and acquirement of e - map , and the design and update technique of navigation database are also put forward in detail
详细叙述了电子地图的作用、获取以及导航数据库的设计与更新技术。