副翼 (fùyì): aileron

Measure Word

一个副翼 gè

Fēixíngyuán tōngguò cāokòng fùyì lái shíxiàn fēijī de gǔnzhuǎn.

The pilot controls the ailerons to achieve rolling of the aircraft.

Fùyì sǔnhuài huì yánzhòng yǐngxiǎng fēijī de cāokòng xìng.

Damage to the ailerons can seriously affect the aircraft's maneuverability.

memory

副 means 'secondary' or 'auxiliary', and 翼 means 'wing'. An aileron is literally an 'auxiliary wing' — a secondary control surface on the main wing.

副 fù

翼 yì