According to the theory of areal economy system, the state of an areal economy unit can be expressed with the features of time series of the economic development and spatial structure.
依据地域经济系统理论，一个地域经济单元状态，可以从时序特征和空间结构特征进行表达，其存在状态受制于时空关联性。
A dynamic wavefront phase measurement with the features of high temporal and spatial resolution, and long measuring lasting time was proposed.
提出了一种具有高的时间和空间分辨率以及长的测量持续时间的动态波前相位测量方法。
Besides the traditional functions, such as spatial information display, query, analysis, the system has the features of real-time positioning and navigation by the GPS technology.
该系统除了具有传统的空间信息显示、查询、分析等功能外，还利用现在迅速兴起的GPS定位技术，实现实时的定位导航功能。
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