spring motor 发条传动装置 ; 发条驱动

spring for motor car 汽车板弹簧

starter motor drive spring 起动马达传动簧

clock-spring motor 钟表发条发动机

motor operator closing spring 电机操作合闸弹簧

SPRING LOADED STARTING MOTOR 弹簧式起动电机

motor flat spring 汽车板簧

motor charged spring operating mechanism 电动机储能弹簧操作机构