a type of toy motor commonly found in toy cars and other vehicles, where the motion of the toy is generated by the friction between the wheels and the surface it moves on, without the need for batteries or external power sources
문법 정보
유생성 상태
무생물
형태적 구성
합성어
가산
복수형
friction motors
예시들
The friction motor in this robot makes it move across the table without needing batteries.
