The two runways are clearly visible as black lines, because the flat concrete reflects radar signals away from the TanDEM-X satellite.
平直的混凝土跑道将卫星雷达信号向远离卫星的方向发射开去，所以在图像中表现为两条深黑色的直线。
The two runways are clearly visible as black lines, because the flat concrete reflects radar signals away from the TanDEM-X satellite.
平直的混凝土跑道将卫星雷达信号向远离卫星的方向发射开去，所以在图像中表现为两条深黑色的直线。
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