参与竞争的两种无人机均为单一扇涡轮驱动的无尾翼飞行飞机，除此以外，X - 47 B被设计用于航母作战，具有可折叠机翼，并装备有尾部吊钩。

While both competitors are tailless flying wings powered by single turbofans, the X-47B was designed for carrier operations and features folding wings and a tail hook.

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本实用新型是一种折叠帽扇，是由龙骨架、轴坐、边框、活动轴及纺织物制品等组成。

The utility model relates to a foldable fan-shaped hat, comprising a keel frame, a shaft seat, a frame, a movable shaft, textile fabric products, etc.

youdao

本实用新型是一种折叠帽扇，是由龙骨架、轴坐、边框、活动轴及纺织物制品等组成。

The utility model relates to a foldable fan-shaped hat, comprising a keel frame, a shaft seat, a frame, a movable shaft, textile fabric products, etc.

youdao