1、
The tab contains a toothed wheel at a high angular velocity by the impinging airstreams.
舵片上有一个带齿的轮,这个轮受到气流的冲击而高速转动.
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2、
Gear: Machine component consisting of a toothed wheel attached to a rotating shaft.
齿轮: 一种机械零件,固定在旋转轴上的带齿的轮子.
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