------Program code: BC-081104-04616 (what's this?)
Source: CCTV.com
11-04-2008 12:16
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A copper clepsydra cast in 1316 is the earliest multiple-container water clock extant in China today.
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Editor:Yang
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A copper clepsydra cast in 1316 is the earliest multiple-container water clock extant in China today.
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Editor:Yang
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