Antiquarian map societies are prospering, and celestial maps are now viewed as a specialty of map collecting.
古地图社会正在蓬勃发展，天体图，现在作为一个专业的地图收集效果。
The research of stars map bottom procession in celestial navigation has been done in this dissertation.
本文是对天文导航中星图图像进行底层处理的研究。
The research of stars map bottom procession in celestial navigation has been done in this dissertation.
本文是对天文导航中星图图像进行底层处理的研究。
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