世界上最早的天文学著作是战国时期的？
Which astronomy book of the Warring States is the oldest in the world?
从1474年起，数学、天文学和占星术的著作开始印刷出版了。
Commencing in1474 mathematical astronomical and astrological works appeared in printed form.
梅文鼎对中西数学和天文学的比较研究是以徐光启（1562一1633 ）的著作为基础的。
Mei's comparative studies of Chinese and Western mathematics and astronomy expanded on the earlier work of Xu Guangqi (1562~1633).
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