An aerial reconnaissance camera of 1916 as operated by the pilot of a B.E.2c 1916年 B.E.2c的飞行员操作的空中侦察照相机 The outbreak of World War One leads to the use of the first aerial reconnaissance photographs. 第一次世界大战的爆发导致了第一批空中侦察照片的使用。 未经授权，不得转载！ |
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