The flying robots were built out of expanded polypropylene with a single motor at the rear and two elevons (control surfaces that enable steering).

飞行器以发泡聚丙烯为主体，在其背部与两个升降舵补助翼（可以操控的界面）上有一个电动机。

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The flying robots were built out of expanded polypropylene with a single motor at the rear and two elevons (control surfaces that enable steering).

飞行器以发泡聚丙烯为主体，在其背部与两个升降舵补助翼（可以操控的界面）上有一个电动机。

youdao