Using water power and having all the functions of the armill ary sphere it was the first astronomical clock in the world.
以水为动力，集浑仪、浑象、报时装置于一体，是世界上最早的天文钟。
Suzanne-Claire Williams: "The Astronomical Clock in Prague's Old Town Square.
Suzanne-ClaireWilliams：“布拉格旧城广场的天文钟。
Suzanne-Claire Williams: "The Astronomical Clock in Prague's Old Town Square.
Suzanne-ClaireWilliams：“布拉格旧城广场的天文钟。
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