... aerial magnetometer 航空磁力仪 aerial mapping camera 航空绘图摄影机 aerial metal 航空金属 ...
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aerial l mapping camera 航空绘图摄影机
The Army also found that the balloons were valuable for the use of charting the terrain, and with the newly invented photographic camera, aerial mapping was invented.
北方军发现用这些气球绘制地图也很有价值，照相机发明后，航空测绘便诞生了。
The paper introduced the working principle and main parameters of Digital Mapping Camera(DMC). It discussed the data characteristics of DMC digital aerial photograph.
通过简要介绍数字航摄相机（DMC）的工作原理和基本参数，讨论了DMC数字航片的数据特点。
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