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《周髀算经》是中国流传至今的一部最早的数学著作,是算经的十书之一,约成书于公元前1世纪,原名《周髀》。它也是我国最古老的天文学著作,主要阐明当时的盖天说和四分历法。
The Book of Songs is one of the earliest math works circulating in China so far. It is one of the ten books of the Book of Songs. It was booked in the 1st century BC and was originally called “Zhou 髀.” It is also one of the oldest astronomical works in our country, mainly explaining the then cover-day theory and the quarter calendar.