elevation of ground water的意思|示意

In the months before, there had been a swarm of small earthquakes, along with changes in ground-water levels and the elevation of local terrain.

几个月之前，就发生了一连串小地震，伴随而来的是地下水水位和当地地形海拔的变化。

A set of algorithms for extracting drainage network from digital elevation model (DEM) based on ground water overflow model is introduced.

介绍基于地表径流漫流模型从数字高程模型(dem)提取水系的一系列算法。