单词	undercarriage
释义	undercarriage /ˈʌndəkarɪdʒ / noun 1A wheeled structure beneath an aircraft, typically retracted when not in use, which supports the aircraft on the ground: the undercarriage collapsed on landing... The proximity of the enemy to the airfield was illustrated by the fact that the fighters barely had time to retract their undercarriages before commencing attacks. On a mission on December 12, enemy fire struck the aircraft and damaged its undercarriage hydraulics. These were single-engined, low-winged monoplanes, usually with enclosed cockpits, retracting undercarriages, and a fixed forward firing armament. 1.1The supporting frame under the body of a vehicle: security guards checked the BMW’s undercarriage with a large mirror... These car light accessories, which can mount to the body around the perimeter of the vehicle's undercarriage or inside the car, come in kits that contain the elements you'll need for the installation. But there are also details intended to give a simpler and cleaner look: the sills seem part of the body instead of a separate undercarriage, the boot lid is tidier and there is less clutter on the bumpers. The undercarriages of tracked vehicles - whether bulldozers, loaders, or excavators - are yet another major maintenance dilemma.
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