Answer» What is National Astronomical Observatory of China mean? The National Astronomical Observatories, Chinese Academy of Sciences (NAOC, Chinese: 中国科学院国家天文台; pinyin: Zhōngguó Kēxuéyuàn Guójiā Tiānwéntái) is an astronomical research institute operated by Chinese Academy of Sciences, along with Shanghai Astronomical Observatory, Purple Mountain Observatory and National Time Service Center. reference
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