Pic Title: Sundial Related Phrase: 圭表 Related pictures: Sundial Source: http://120.img.pp.sohu.com/ Pic Description: 　　Free Talk sundial Algorithm (2) - Tianyuan where Kim Lizards - Sohu blog !!! "According to Ming dynasty years October 10, shadow ten feet seven Translated by Google No. / 5 Picture               Slide Show

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