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Aerial photo taken on Oct. 23, 2019 shows heliostats of a molten-salt solar thermal power plant in Dunhuang, northwest China's Gansu Province. (Xinhua/Ma Ning)
Aerial photo of heliostats of molten-salt solar thermal power plant in China's Gansu
Source: Xinhua| 2019-10-24 22:14:27|Editor: Yurou
