For special earthquake location research, it also provides function to draw two dimensional isogram drawings of earthquake location error and distribution drawings of three dimensional error.
对于专门进行地震定位研究的工作，还提供了绘制地震定位误差二维等值线图和三维误差分布图的功能。
According to the different height error requirement of the system, a two dimensional and a three dimensional area for command and guide success are defined.
依据指挥引导高度误差的不同要求，分别定义了二维指挥引导成功区和三维指挥引导成功区。
This paper presents the error models developed for handling geometric features in three dimensional Geographical Information Systems.
本文提出了三维地理信息系统中几何特征的误差模型。
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