![](http://www.alamy.com/thumbs/6/8F221826-75F9-4DA5-A8F9-CDFD65328A21/T0K7FH.jpg)
geography / travel, China, science, windtunnel of the Tsinghua University Aeronautical Research Institute, Bailongtan, Yunnan, Additional-Rights-Clearance-Info-Not-Available
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Keywords: 1950er, aeronautical, china, geography, jahre, province, science, travel, tsinghua, university, windtunnel