File:The Monoplane Designed by Yin Wenyou & Zhang Jieqian of Tsinghua University in 1936.gif
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The_Monoplane_Designed_by_Yin_Wenyou_&_Zhang_Jieqian_of_Tsinghua_University_in_1936.gif (501 × 297像素,文件大小:59 KB,MIME类型:image/gif、0.2秒)