large scale topographic mapping meaning in Chinese

大比例尺地形测

Our experiments show that the photogrammetry with digital camera has a better precision and the large scale topographic map and orthograph can be produced with it
试验证明利用数码相机进行摄影测量精度很高，能够用来测制大比例尺地形图和正射影像图。
In order to solve the problem of symbolic representation in geographic concepts and their mutual relationships , the geometrical composition of symbols of large scale topographic maps and the semantic and geometrical relationships among symbols are analyzed , the symbols system of topographic maps is regarded as a two - dimensional graphic language , and the relationship between symbols and geographic concepts is discussed
摘要为了解决地理概念及其相互关系的符号化表达问题，分析了大比例尺地形图符号的几何构成及符号间的几何和语义关系，把地形图符号系统作为一种二维图形语言，讨论了它和地理概念之间的关系。