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![History of timekeeping devices - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_15.jpeg)
History of timekeeping devices - Wikipedia, the free encyclopedia
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日期:2024-06-12
The water clocks used in Iran were one of the most practical ancient tools for .....
Since the hourglass was one of the few reliable methods of measuring time at ......看更多