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,檔案大小:59 KB,MIME 類型:image/gif、0.2秒)