从破坏形式可以断定叶片曾发生大幅度扭转颤振而且与不利地形有关。
It can be concluded from the failure modes that the blades flutter have occurred and significantly reversed, which was related to the negative terrain.
从破坏形式可以断定叶片曾发生大幅度扭转颤振而且与不利地形有关。
It can be concluded from the failure modes that the blades flutter have occurred and significantly reversed, which was related to the negative terrain.
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