stackfreed造句

例句与造句

1. The stackfreed, a spring-loaded cam on the mainspring shaft, added a lot of friction and was abandoned after about a century.
2. Two devices to do this had appeared in the first clock-watches : the " stackfreed " and the " fusee ".
3. At the end of the running period there was often a steep depression in the cam that the roller pressed against, so the force of the stackfreed spring aided the weakened mainspring.
4. The stackfreed consists of a stiff spring arm " ( A ) " with a roller at the end " ( B ) " which presses against an eccentric cam " ( D ) ", usually the roller rides in a groove in the cam's edge.
5. It's difficult to find stackfreed in a sentence. 用stackfreed造句挺难的