基于PDA的三维地形数据实时获取采用Windows CE API通信函数编写通信程序,通信接口采用事件驱动与异步结合的串口操作。通过基于PDA的地形数据获取模块以及PDA与测绘设备的通信,不仅实现GIS图形数据的实时测量和地图的实时绘制,图形属...基于PDA的三维地形数据实时获取采用Windows CE API通信函数编写通信程序,通信接口采用事件驱动与异步结合的串口操作。通过基于PDA的地形数据获取模块以及PDA与测绘设备的通信,不仅实现GIS图形数据的实时测量和地图的实时绘制,图形属性实时记录,也可实现野外实时成图。展开更多
The sustainable development theories correlated with mineral resources mainly include Resources Scarcity, Neo-classical Economic Principles, Resources Limits and Sustainable Development, and Market Resources Environme...The sustainable development theories correlated with mineral resources mainly include Resources Scarcity, Neo-classical Economic Principles, Resources Limits and Sustainable Development, and Market Resources Environment Complementation Theories. The regional economic theories correlated with mineral resources mainly include Industrial Location Theory, H-O theorem and Territorial Labor Division Theory, Regional Industrial Structure Evolution Theory, and Territorial Production Synthesis Theory. (To be continued)展开更多
文摘The sustainable development theories correlated with mineral resources mainly include Resources Scarcity, Neo-classical Economic Principles, Resources Limits and Sustainable Development, and Market Resources Environment Complementation Theories. The regional economic theories correlated with mineral resources mainly include Industrial Location Theory, H-O theorem and Territorial Labor Division Theory, Regional Industrial Structure Evolution Theory, and Territorial Production Synthesis Theory. (To be continued)