苏州市档案馆里，收藏着三幅极为珍贵的宋代石刻碑拓——《天文图》、《地理图》、《平江图》。说珍贵，不只因为三碑刻形成的年代久远，历７００余年沧桑仍保存完好，为国内罕见，更因它们所记载的内容，真实地反映了我国宋代科技发展的水平和江南城市建设的面貌，具有极高的 In the archives of Suzhou City, there are three extremely valuable inscriptions on stone carvings in the Song Dynasty - “Astronomical Map”, “Geographic Map” and “Pingjiang Map”. To say precious is not only because of the long history of the formation of the three inscriptions, but also the vicissitudes of life that have survived more than 700 years and are still preserved well. It is rare in the country and, because of what they have recorded, truly reflects the level of science and technology development in the Song Dynasty in our country and the urban construction in the south of the Yangtze River. extremely