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Rubbing of the Suchow star chart. Chinese star maps (Chinese: s 星 图, t 星 圖, xīngtú) are usually directional or graphical representations of Chinese astronomical alignments. Throughout the history of China, numerous star maps have been recorded. This page is intended to list or show the best available version of each star map.
The whole set of star maps contained 1,300 stars. The Dunhuang map or Dunhuang Star map is one of the first known graphical representations of stars from ancient Chinese astronomy, dated to the Tang dynasty (618–907). Before this map, much of the star information mentioned in historical Chinese texts had been questioned. [2]
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ISO 10816-2:2009 Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min; ISO 10816-3:2009 Part 3: Industrial machines with nominal power above 15 kW and nominal speeds between 120 r/min and 15 000 r/min when measured in situ
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The Chinese developed multiple cosmological models before Western influences changed the field: [5] Gai Tian ("canopy heaven") – The sky is a hemisphere, the Earth is a disc at the bottom, surrounded by water, which rotates around the North Pole once a day.
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