在20世纪初，有四种远距离传送信息和接收信息的有效方式：印刷、摄影、电报和电话。
At the beginning of the twentieth century, there were four powerful means of transmitting and receiving information over long distances: print, photography, telegraph and telephone.
并且已经成功地应用于某军用航空相机远距离倾斜摄影的光学图像自动快速镶嵌系统。
The model has been applied successfully to optical image automatic fast mosaic system on some military aerial camera remote slope photo-graphy.
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