Japanese television showed aerial footage of an ominous 13-foot muddy wave washing across the northeastern coast near the epicenter, consuming farms and small rural communities.
在日本电视台的航拍短片中可以看到，在震中附近有一波令人不安的高达13英尺的浑黄色泥浪正席卷整个东北海岸。
Increase of detection range and fast precision tracking are main difficulties in weak aerial target detection for High Frequency Surface Wave Radar (HFSWR).
增大探测距离、快速精确跟踪是高频地波雷达探测飞行小目标所面临的主要困难。
Increase of detection range and fast precision tracking are main difficulties in weak aerial target detection for High Frequency Surface Wave Radar (HFSWR).
增大探测距离、快速精确跟踪是高频地波雷达探测飞行小目标所面临的主要困难。
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