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出典:Wikipedia
出典:『Wikipedia』 (2010/11/11 05:02 UTC 版)
The Jayrun Water Clock, a water clock built by the Arab engineer Muhammad al-Sa'ati, was positioned at the gate of Damascus, Syria, at the exit of the Umayyad Mosque in the 12th century during the reign of Nur ad-Din Zangi.
jayrun water clock