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标题图片The Beidou Navigation Satellite System (北斗卫星导航系统) is a global navigation satellite system developed by China. (More)
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Did you know...
·... that Ho Leung Ho Lee Foundation offers the largest non-governmental science and technology awards in China?
·... that Riyuetan-Weipai Building is the world's largest solar energy office building?
·... that Wuhan-Guangzhou high-speed railway has a 350-km-per-hour average speed, boasting the world's fastest train journey?
·... that the Old Town of Pingyao's history goes back 2,700 years, when it was first built during the reign of King Xuan (827-782 BC) of the Western Zhou Dynasty?
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On this day...
标题图片
National Astronomical Observatories
April 25 
·1961: China established diplomatic relations with Laos.
·1997: China ratified the Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on their Destruction (CWC).
·2001: National Astronomical Observatories (NAOC) were founded.
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