MacArthur 发表于 2013-10-19 20:40
这只“虎”的俩前起落架上包裹的是什么东西?起落架整流罩?, w+ ^/ t) N; u- ^8 t7 ]
7 m+ \7 j5 v1 Y a! x
让我想起另外一个著名的“穿草鞋的”
What he found was that vortex ring state is surprisingly hard to induce.
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