train d’atterrissage principal
/ˈtʁɛ̃ datɛʁisˈaʒ pʁɛ̃sipˈal/
n
English: main landing gear · 主起落架
Sens：Retractable mechanism that enables the aircraft to land; it is located behind the aircraft’s center of gravity under its wings.
English: main landing gear · 主起落架