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?6 ?1 W6 L) q1 f2 {+ D1 B7 o. T
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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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