noun
knuckle part
Refers to the knuckle area of a finger or a mechanical part shaped like a knuckle. Used in contexts such as anatomy, robotics, or automotive parts.
ロボットのナックルパートが摩耗している。
The robot's knuckle part is worn out.
この車のナックルパートは定期的に交換が必要だ。
The knuckle part of this car needs to be replaced regularly.